\(5x\left(x-3\right)=\left(x-2\right)\left(5x-1\right)-5\)
\(=>5x^2-15x=5x^2-x-10x+2-5\)
\(=5x^2-15x=5x^2-11x-3\)
\(=>5x^2-15x-5x^2+11x+3=0\)
\(=>-4x+3=0\)
\(=>-4x=-3\)
\(=>x=\frac{3}{4}\)
Ko phải tiếng anh đâu
tìm x ,biết
a, x^2 -4x =12
b, ( 5x+1)^2 - (5x -3)(5x+3)=30
c, (x-1) ( x^2 +x +1 ) + x(x +2) (2-x)=5
d, 5x(x-3)^2 -5 (x-1)^3 +15 (x+4) (x-4) =5
tìm x biết
a) 5x(2x-7)+2x(8-5x)=5
b)(3x-5)(7-5x)-(5x+2)(2-3x)=4
c)5(2x-3)^2-5(x+1)^2-15(x+4)(x-4)=-10
d) 5x(x-3)(x+3)-(2x-3)^2 -5(x+2)^3+34x(x+2)=1
Tìm x
1) (5x-7)(x-9)-(-x+3)(-5x+2)=2x(x-4)-(x-1)(2x+3)
2) (x-3)(-2x+5)-2x(x-4)+(4x-5)(x-3)=(x-2)(x-1)-(x^2-5x)
1. Tìm x, biết:
a, (x-2)^2-(x+3)^2-4(x+1)=5
b, (2x-3)(2x+3)-(x-1)^2-3x(x-5)=-44
c. (5x+1)^2-(5x+3)(5x-3)=30
d. (x+3)^2+(x-2)(x+2)-2(x-2)^2=7
Bài 2 : Tìm x , biết
a) ( 3x -1 ) (2x+7) - ( x +1) (6x-5 ) = 16
b) ( 10x +9 )x - ( 5x -1 ) (2x+3 )= 8
c) ( 3x - 5 ) ( 7- 5x ) + ( 5x +2 )( 3x-2 ) -2 = 0
d) x(x + 1) ( x+6 ) - x3 = 5x
TÌM X,BIẾT:
a/\(\left(5x+1^{ }\right)^2-\left(5x-3\right)\left(5x+3\right)=30\)
b/\(\left(x-1\right)\left(x^2+x+1\right)+x\left(x+2\right)\left(2-x\right)=5\)
Tìm x :
a) 5x . (2x -7) + 2x . (8 - 5x) = 5
b) x.(x - 1/3) - 1/2 x . (2x - 3) = 1/4
c) 5. (x2 - 3x + 1) + x (1 - 5x) = x - 2
tìm x biết
a,2x+3(x-1)(x+1)=5x(x+1)
b,,(8-5x)(x+2)+4(x-2)(x+1)=(2+x)(2-x)
c,, 4(x-1)(x+5)-(x+2)(x+5)=3(x-1)(x+2)
Tìm x , biết
5x(x-1)=x-1
2(x+5)-x^2-5x=0
(x-3)^2 -(x+5)^2
Tìm x:
a,x-2x+1=16
b,(5x+1)2-(5x-3)(5x+3)=30
c,(x-1)(x2+x+1)+x(x+2)(x-2)=5
Cảm ơn trước.
