\(\left(x-2\right)\left(x+2\right)-\left(x+5\right)\left(x-3\right)=-3\)
\(\Leftrightarrow x^2-4-\left(x^2-3x+5x-15\right)=-3\)
\(\Leftrightarrow x^2-4-x^2+3x-5x+15=-3\)
\(\Leftrightarrow-2x=-14\)
\(\Leftrightarrow x=7\)
Tìm x
(X-1)^3 + 3(x-3)^2 -(x+2)(x^2-2x+4) = (x+2)^3 -(x-3)(x^2+9) - 6x^2 + 5
Tìm x
( x - 5 ) ( x + 5) - ( x + 3)^2 +3(x-2)^2 = ( x+1 )^2 - (x+4) (x-4) +3x^2
Tìm x
(X-1)^3 + 3(x-3)^2 -(x+2)(x^2-2x+4) = (x+2)^3 -(x-3)(x^2+9) - 6x^2 + 5
tìm x
a) (x-5)(x+5) = (x-2)
b) (3-2x)2 - (x-5)(4x+3)= 2(x+5)
c) (7-x)(2x-5)-(7-x)2x= 3(-5+x)
Bai1:tìm x biết.
a)4×(x-5)-(x-1)×(4x-3)=5
b) (3x-4)×(x-2)=3x×(x-9)-3
c)(x-5)×(x-4)-(x+1)×(x-2)=7
d)(2x-1)×(x-2)-(x+3)×(2x-7)=3
Tìm x :
5x(x - 3)(x + 3) - (2x - 3)2 - 5(x + 2) + 34x(x + 2) = 1
Tìm x biết: x^5=x^4+x^3+x^2+x+2
tìm x;y: 1) 9x^2-6x=9
2) (2x+3)^2 + 2(2x+3)(x-2)+(2-x)^2=4
3)(x+3)(3-x)=5
4)(3x+2)(9x^2-3x+1)=2
Tìm x biết
a, 3(x-1)^2 -3x(x-5)=1
b, (6x-2)^2 +(5x-2)^2-4(3x-1)(5x-2)=0
c, (x-2)^3-x^2(x-6)^=-5
