1. 3x-4+4x=8+4x 2. 5(x-1)=4x 3. 5x+7(3x+2)=6(4x-1)
1. 1. 3x-4+4x=8+4x 2. 5(x-1)=4x 3. 5x+7(3x+2)=6(4x-1)
® 3x-4+4x = 8+4x
3x+4x-4x = 8+4
3x/3 = 12/3
x = 6
® 5 (x-1) = 4x+3
5x-5 = 4x+3
5x-4 = 3+5
x = 8
® 5x+7 (3x+2) = 6 (4x - 1)
5x+21x+14 = 24x-6
5x+21x-24x = 14-6
2x/2 = 8/2
x = 4
2. 1. 3x . 6y=2. (3x +5y) . (4x +6y)3. 7× . (4x -5y)
PENYELESAIAN:
1. 18xy
2. 12x² + 18xy + 20xy + 30y²
12x² + 30y² + 38xy
3. 28x² - 35xy
3. 1. (2x+7) (3x-5)2. (4x-2) (2x+2)3. 3x+5 (3x-7)
Jawabannya : 0,04
Maaf Kalau Salah
#Kwwkwkw1. 6x²-10x+21x-35 = 6x²+11x-35
2. 8x²+8x-4x-4 = (8x²+4x-4) : 4 = 2x²+x-1
3. 9x²-21x+15x-35 = 9x²-6x-35
4. 3 ( 2x -5 ) + 2 ( 4x + 7 ) = 5 ( 3x + 1 ) adalah
3 (2x-5) + 2 (4x+7)= 5 (3x+1)=
=(5.3x)+(5.1)
=15x+56x-15+8x+14=15x5
14x-1=15x5
14x-15x=5+1
-x=6
x=-6
5. himpunan penyelesaian 1/4x -3<2/3x+ 7 adalah
Jawaban:
1/4x - 3 < 2/3x + 7
1/4x - 2/3x < 7 + 3
(3x - 8x)/12 < 10
-5x/12 < 10
-5x < 120
x < -120/5
x < -24
HP = {( x | x < -24 )}
Jawaban:
x<-24
Penjelasan dengan langkah-langkah:
[tex] \frac{1}{4} x - 3 < \frac{2}{3} x + 7 \\ = 3x - 36 < 8x + 84 \\ 3x - 8x < 84 + 36 \\ - 5x < 120 \\ x = - 24[/tex]
6. 3(2x-5)+2(4x+7)=5(3x+1)
[tex]3(2x - 5) + 2(4x + 7) = 5(3x + 1) \\ \\ 6x - 15 + 8x + 14 = 15x + 5 \\ \\ 6x + 8x - 15x = 5 + 15 - 14 \\ \\ 14x - 15x = 20 - 14 \\ \\ - x = 6 \\ \\ x = - 6[/tex]
SemogaMembantu
Jawaban:
3(2x - 5) + 2(4x + 7) = 5(3x + 1)
6x - 15 + 8x + 14 = 15x + 5
14x - 1 = 15x + 5
14x - 15x = 5 + 1
-x = 6
x = -6
➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖➖
semoga membantu ^_^
7. 1. | 4/3x - 1 | = 2/7 2. | 4x + 1 | = 3/8
1•
|4/3 x - 1 | = 2/7
• 4/3 x - 1 = 2/7
4/3 x = 1 + 2/7
4/3 x = 9/7
x = 27/28
• 4/3 x - 1 = -2/7
4/3 x = 5/7
x = 15/28
2•
|4x + 1 | = 3/8
• 4x + 1 = 3/8
4x = -5/8
x = -5/32
• 4x + 1 = -3/8
4x = -11/8
x = -11/32
8. 1. (2x - 5) (3x + 7) 2. (6x - 3) (4x - 2)
Penjelasan dengan langkah-langkah:
1.(
[tex]6 {x}^{2} - x - 35[/tex]
2
[tex]24 {x}^{2} - 24x + 6[/tex]
9. 1. (2x - 5) (3x + 7)2. (6x - 3) (4x - 2)
Jawaban:
1 = 6x² - 1x - 35.
2= 24x² - 24x + 6.
Penjelasan dengan langkah-langkah:
Permisi bantu jawab
1. ( 2x - 5 )(3x + 7 )
1. = 2x X 3x = 6x²
1. = -5 x 7 = -35
= 6x² ..?... - 35
= -5 x 3x = -15x
= 2x X 7 = 14x
-15+14 = -1x.
Jadi = 6x² - 1x - 35.
2. (6x - 3)(4x - 2).
2. = 6x X 4x = 24x²
2. = -3 X -2 = 6
= 24x² ....?... + 6
= -3 X 4x = -12x
= 6x X -2 = -12x
= -12x+-12x = Hutang + Hutang = Hutang
= -24x
Jadi = 24x² - 24x + 6.
Terimakasih, maaf jika salah..
10. 1-) 2x+7 > 4x+3 2-) 3x > 12
Penjelasan dengan langkah-langkah:
2x + 7 > 4x + 3
2x - 4x > -7 + 3
- 2x > - 4
x < 2
------ batas
3x > 12
x > 12/3
x > 4
11. Nomer 1.|2x+1|=3Nomer 2.|3x+2|=7Nomer 3.|4x+3|=|4x-2|tolong ya
itu jawaban no 1 .. semoga bermanfaat|3x+2|=7
3x+2=7
3x=7-2
3x=5
x=2
|4x+3|=|4x-2|
4x+3=4x+2
4x-4x=2-3
x=-1
12. tolong di bantuuua) |4x-7|>11 b) |4x+3|=|3x+2|c) |4x-1|<|3x+2|
Cara A) = 4x>11+7 = Jawabanya 4x>18
Cara B) = 4x+3x= 3-2. Jawabanya x= -1
Cara C) = 4x-3x<2+1. Jaaabanya x= <3
13. 1 (3x+5x) 2 (4x+7)x(3x²-2x+3) 3 (4x-3y-1)x(2x-y+3)
1.8x
2.(4x)(3x²-2x+3)
=12x³+8x²+12x
(7)(3x²-2x+3)
=21x²-14x+21
maka(4x+7)×(3x²-2x+3)=12x³+8x²+12x+21x²-14x+21=12x³+8x²+21x²+12x-14x+21=12x³+29x²-2x+21
3.(4x)(2x-y+3)=8x²-4xy+12x
(-3y)(2x-y+3)=-6xy+3y²-9y
(-1)(2x-y+3)=-2x+y-3
maka(4x-3y-1)×(2x-y+3)=8x²-4xy+12x-6xy+3y²-9y-2x+y-3
=8x²+3y²-4xy-6xy+12x-2x-9y+y-3
=8x²+3y²-10xy+10x-8y-3
14. 1.10 (2y - 10) =2. (x + 5) (5x-1) - ...3. (7 - 2x) (2x - 7) - ...4. (3x - 2) (3x + 2) =5.(4x - 3) x (4x + 3) -
Penjelasan dengan langkah-langkah:
1. 20y - 100
2. 5x² - 6x -5
3. -4x² + 28x - 49
4. 9x² -4
5. 16x² - 9
cmiiw
15. 1. (x-2) x (x-7) = 2. (2x-1) x (1-x) = 3. (x² + 4x) x (3x-7) = 4. (x² + 4x) x (3x-7) =
Nomor 1:
(x - 2) (x- 7)
= x (x - 7) - 2 (x - 7)
= x^2 - 7x - 2x + 14
= x^2 - 9x + 14
Nomor 2:
(2x - 1) (1 - x)
= 2x (1 - x) - 1 (1 - x)
= 2x - 2x^2 - 1 + x
= - 2x^2 + 3x - 1
= 2x^2 - 3x + 1
Nomor 3:
(x^2 + 4x) (3x - 7)
= x^2 (3x - 7) + 4x (3x - 7)
= 3x^3 - 7x^2 + 12x^2 - 28x
= 3x^3 + 5x^2 - 28x
1.(x-2)×(x-7)=x2-7x-2x+14=x2-5x+142.(2x-1)×(1-x)=2x+2xpangkat 2 -1+1x
3.(x2+4x)×(3x-7)=3xpangkat2 -21x pangkat2+12xpangkat 2-28xpangkat2
4.(x2+4x)×(3x-7)=3xpangkat3-7xpangkat2+12xpangkat2 -28x
16. 1. (4x - 7)=10 2. (3x + 3)=9
1. 4x= 10+7
4x= 17
x= 17/4
2. 3x= 9-3
3x= 6
x= 2
17. 1. 4x - 7 = 3x - 23 2. 2x - 15 = -4x + 3
Jawaban:
3x/ (x-5)(x+3) - 2/(x+3) =
={3x - 2(x-5)}/(x-5)(x+3)
= ( 3x- 2x +10)/ (x-5)(x+3)
= (x + 10)/(x-5)(x+3)
= (x+10)/(x² - 2x - 15)
Penjelasan dengan langkah-langkah:
sorry if it's wrong
Jawaban:
1.4x-3x= -23+7
x. = -16
2.2x+4x=3+15
6x=18
x=18/6
x=3
18. 10. Diketahui f(x) = x2 - 3x + 4. Fungsiinversnya adalah f'(x) = ....a.3+√4x - 7 3 - 4x - 7/2b.2 + √44-7 2-√44-7/3c. 3+ 4x - 7 atau 3 - 4x - 7d. 2 + 1 + 4x atau 2-1 + 4xe. 1 + 4x - 7 atau 1 - 4x - 7
Jawaban:
a. f⁻¹(x)=[3±√(4x-7)]/2
Penjelasan dengan langkah-langkah:
f(x)=x²-3x+4
Misal f(x)=y
y=x²-3x+4
y=(x-3/2)²+4-(3/2)² (kuadrat sempurna)
y=(x-3/2)²+4-9/4
y=(x-3/2)²+7/4
(x-3/2)²=y-7/5
x-3/2=±√(y-7/4)
x=3/2±√(y-7/4)
x=[3±√(4y-7)]/2
Jadi, f⁻¹(x)=[3±√(4x-7)]/2
19. 3 ( 2x -5 ) + 2 ( 4x + 7 ) = 5 ( 3x + 1 ) adalah
[tex]3(2x - 5) + 2(4x + 7) = 5(3x + 1) \\ 6x - 15 + 8x + 14 = 15x + 5 \\ 14x - 1 = 15 + 5 \\ 14 - 1 = 15 \times + 5 \\ 14x - 15x = 5 + 1 \\ - x = 6 \\ x = - 6[/tex]3 ( 2× -5) + 2 ( 4× + 7)
6× - 15 + 8× + 14
6× + 8× + 14 - 15
14× + 1
= 5 ( 3× + 1
= 15×
20. 3x^3 + 4x^2 - 6x + 7 : x + 1 = ...?
Gunakan sintesa horner.
- Cara disediakan di lampiran -
Note:
Jika soal seperti itu, akan menghasilkan hasil 3x² + x + -7 dan sisa 14
Ada di panel kiri.
Jika dikoreksi 3x³ + 4x² - 6x - 7, sisanya adalah nol.
Ada di panel kanan.
=4x 3. 5x+7(3x+2)=6(4x-1) Daftar Isi 1. 1. 3x-4+4x=8+4x 2. 5(x-1)=4x 3. 5x+7(3x+2)=6(4x-1) 2. 1. 3x . 6...){kind=link}
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