\(4x-x^3=0\)
\(\Rightarrow x\left(x^2-4\right)=0\)
\(\Rightarrow x\left(x-2\right)\left(x+2\right)=0\)
\(\Rightarrow\left[{}\begin{matrix}x=0\\x=2\\x=-2\end{matrix}\right.\)
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 : a) x^3 - 1/4x = 0 b) ( 2x - 1 )^2 - ( x + 3 )^2=0 c) x^2(x-3)+12-4x=0
Tìm x
x^2 - 4x = 0
4x^2 - 9 = 0
2x ( x - 3 ) + 5( x - 3 ) = 0
x ( 2x + 9 )- 4x - 18
( 2x - 1 )^2 - ( x + 2 )^2 = 0
Giải phương trình bậc 3:
a)2x^3+5x^2-3x-10=0
b)x^3-2x^2+7x+66=0
c)x^3+3x-4=0
d)x^3+7x^2-48=0
e)4x^3+4x^2-x+14=0
f)3x^3-4x^2+5x+500=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
m.n giúp mk bài này vs ạ
x^2 + 5x +6 =0
x^3 - x^2 = 4x^2 -8 x +4
2(x+3)-x^2 - 3x=0
x^2= 4x+3=0
x^2 +3x+3=0
Tìm x
x^3 - 3x^2 - 4x + 12 = 0
x^4 + x^3 - 4x -4 = 0
Tìm x X^3+4x^2+4x+3=0
1) (x^3 - x^2)- 4x^2 + 8x - 4 = 0
2) 2x^3 - 50x = 0
3) (x + 1) = ( x + 1)(x - 1)
4) ( 3x+1)^2-4(X-3)^2=0
5)(X+3)(X^2-5X+9)-X^3=2X
6) (4X+3)^2-(4X-3)^2-5X-2=0
7)(X-1)^3-(X-3)(X^2+3X+9)-3X(2-X)=5
