\(4x^2-\left(x+3\right)^2=0\)
\(\Rightarrow\left(2x-x-3\right)\left(2x+x+3\right)=0\)
\(\Rightarrow3\left(x-3\right)\left(x+1\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=3\\x=-1\end{matrix}\right.\)
tìm x biết
a)4x^2+4x-3=0
b)x^4-3x^3-x+3=0
c)x^2(x-1)-4x^2+8x-4=0
tìm x biết
a)4x^2+4x-3=0
b)x^4-3x^3-x+3=0
c)x^2(x-1)-4x^2+8x-4=0
tìm x biết
1, x mũ 3 + 4x mũ 2 + 4x = 0
2, ( x + 3 ) mũ 2 - 4 = 0
3, x mũ 4 - 9x mũ 2 = 0
4, x mũ 2 - 6x + 9 = 81
5, x mũ 3 + 6x mũ 2 + 9x - 4x = 0
Tìm x biết:
a) x 2 + 3 x = 0 b) x ( 2x − 1) + 4x − 2=0 c) ( x 2 + 2 x )2 − 2 x 2 − 4 x = 3
Tìm x biết :
x^4-4x^3+4x^2-(2x-4)(x^2-2x)+(2-x)^2=0
Tìm x biết
a) 25x^2 -1-(5x-1)(x+2) = 0
b) (2x-3)-(3-2x)(x-1) = 0
c) 9 -4x^2-(6+4x)(x-5) = 0
Tìm x biết: 4x².(x-2)-x+2=0 x³+27+(x+3).(x-9)
Tìm x biết: a) (x-3)^{2}-(x+2)(x-2)=-5 b) x^{3}-2x^{2}-4x+8=0
Tìm x, biết
(x+ 1)^ 2= 4(x+ 1)^ 2
6x^ 2- x- 2= 0
4x^2+ 4x- 3= 0
2x- 8x^ 2= -21
