Ta có : \(\left(x-1\right)^3-x\left(x+1\right)^2=5x\left(2-x\right)-11\left(x+2\right)\)
=> \(x^3-3x^2+3x-1-x\left(x^2+2x+1\right)=5x\left(2-x\right)-11\left(x+2\right)\)
=> \(x^3-3x^2+3x-1-x^3-2x^2-x=10x-5x^2-11x-22\)
=> \(-5x^2+3x-1=-5x^2-22\)
=> \(3x-1=-22\)
=> \(3x=-21\)
=> \(x=-7\)
Vậy phương trình có tập nghiệm là \(S=\left\{-7\right\}\)
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)
ĐS: x=-7
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
a, (x-1)^2+ (x+3)^2= 2(x-2)(x+1)+38
b, 5(2x-3)-4(5x-7)= 19 - 2(x+11)
14, giải các PT sau.
1, 4-(x-5)=5(x-3x)
2, 32-4(0,5y-5)=3y+2
3, 19-2(x+11)=5(2x-3)-4(5x-7)
4, 4(x+3)-7x+17=8(5x-1)+166
5, 17-14(x+1)=13-4(x+1)-5(x-3)
6, 5(x+10)2+2x=5x2-3
7, (2x-1)2+5=(2x+3)(2x-3)-x
8, 3(x-2)2+2(x+3)(x-3)=5(x+1)2
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
14, giải các PT sau.
1, 4-(x-5)=5(x-3x)
2, 32-4(0,5y-5)=3y+2
3, 19-2(x+11)=5(2x-3)-4(5x-7)
4, 4(x+3)-7x+17=8(5x-1)+166
5, 17-14(x+1)=13-4(x+1)-5(x-3)
6, 5(x+10)2+2x=5x2-3
7, (2x-1)2+5=(2x+3)(2x-3)-x
8, 3(x-2)2+2(x+3)(x-3)=5(x+1)2
