\(\Leftrightarrow2x+22-3x^2-33x=6x-15x^2-4+10x\)
\(\Leftrightarrow12x^2-47x+26=0\)
\(\Leftrightarrow12x^2-8x-39x+26=0\)
\(\Leftrightarrow4x\left(3x-2\right)-13\left(3x-2\right)=0\)
\(\Leftrightarrow\left(4x-13\right)\left(3x-2\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x=\dfrac{13}{4}\\x=\dfrac{2}{3}\end{matrix}\right.\)
Vậy...
a) (x-1)^3-x(x+1)^2=5x(2-x)-11(x+2)
b) (x-3)(x+4)-2(3x-2)=(x-4)^2
a) (x-1)^3-x(x+1)^2=5x(2-x)-11(x+2)
b) (x-3)(x+4)-2(3x-2)=(x-4)^2
Giải phương trình về dạng ax+b=0
1. (- (x - 3))/2 - 2 = 5(x + 2)/4
2. 2(2x + 1)/5 - (6 + x)/3 = (5 - 4x)/15
3. (7 - 3x)/2 - (5 + x)/5 = 1
4. (x - 1)/2 +3(x + 1)/8 = (11 - 5x)/3
5. (3 + 5x)/5 - 3 = (9x - 3)/4
Giải phương trình
1) 2x+1=15-5x
2) 3x-2=2x+5
3) 7 (x-2)=5 (3x+1)
4) 2x+5=20-3x
5) -4x +8=0
6) x-3=10-5x
7) 3x-1=x+3
8) 2(x+1)=5x-7
Giải pt:
a) \(\frac{9x-0,7}{4}-\frac{5x-1,5}{7}=\frac{12x-2,1}{3}\)
b) \(\frac{3x-2}{11}-\frac{x}{3}=\frac{3x-5}{7}-\frac{5x-3}{9}\)
a)5-(x-6)=4(3-2x)
b)2x(x+2)2-8x2=2(x-2)(x2+2x+4)
c)7-(2x+4)=-(x+4)
d)(x-2)3+(3x-1)(3x+1)=(x+1)3
e)(x+1)(2x-3)=(2x-1)(x+5)
f)(x-1)3-x(x+1)2=5x(2-x)-11(x+2)
g)(x-1)-(2x-1)=9-x
h)(x-3)(x+4)-2(3x-2)=(x+4)2
i)x(x+3)2-3x=(x+2)33+11
j)(x+1)(x2-x+1)-2x=x(x+1)(x-1)
Đề bài: Giải các phương trình sau :
a) ( x - 1 ) 3 - x ( x + 1 )2 = 5x ( 2 - x ) - 11 ( x + 2 )
b) ( x - 2 )3 + ( 3x - 1 ) ( 3x + 1 ) = ( x + 1 )3
c) ( 2x - 1 )2 - 4 ( x + 3 )2 = 5x - 7
Các cậu giúp mình với, mình cảm ơn ạ !
Giải các phương trình sau:
1. a) 7x + 12 = 0 b) 5x – 2 = 0 c) 12 – 6x = 0 d) – 2x + 14 = 0
2. a) 3x + 1 = 7x – 11 b) 2x + x + 12 = 0 c) x – 5 = 3 – x d) 7 – 3x = 9 – x
e) 5 – 3x = 6x + 7 f) 11 – 2x = x – 1 g) 15 – 8x = 9 – 5
3. a) 0,25x + 1,5 = 0 b) 6,36 – 5,2x = 0
1. giải phương trình
a, 7x-5=13-5x
b, 5(2x-3)-4(5x-70)=19-2(x+11)
c, \(\frac{3x-7}{2}+\frac{x+1}{3}\)=-16
d, (x-1)2+(x+3)2=2(x-2)(x+1)+38
