\(\Leftrightarrow x^4-x^3-2x^2-x^3+x^2+2x-x^2+x+2=0\)
\(\Leftrightarrow x^2\left(x^2-x-2\right)-x\left(x^2-x-2\right)-1\left(x^2-x-2\right)=0\)
\(\Leftrightarrow\left(x^2-x-1\right)\left(x^2-x-2\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x^2-x-1=0\\x^2-x-2=0\end{matrix}\right.\)
tim x sao cho:
\(x^4-2x^3-2x^2+3x+2=0\)
Tim x sao cho :
\(x^4-2x^2+9-4x\left(3-x^2\right)=0\)
bai 1: phân tích đa thức thành nhân tử
a) x2 - 4x - y2 + 4
b) x2 - 2x - 3
c) (x2 -3x -1)2 -12(x2 - 3x -1) + 27
Bai 2: Tim x:
a) x2 -2015x + 2014= 0
b) x2(x2 + 1) - x2 -1=0
Bai 3:Tim a để a) đa thức x3 + x2 - x + a chia hết cho đa thức x + 2
b) đa thức 2x3 - 3x2 + x + a chia hết cho đa thức x + 2
Tìm x:
a) 3x(x - 2) - x + 2 = 0
b) 4x(x - 3) - 2x + 6 = 0
c) 2x(x - 4) + x -4 = 0
d) 2x^3 + 4x =0
e) 3x^3 - 6x = 0
Giúp mình với!!!
Tìm x:
a)x(2x-4)-(x-2)(2x+3)
b)x(3x+2)+(x+1)^2-(2x-5)(2x+5)=-12
c)(x-1)(x^2+x+1)-x(x-3)^2=6x^2
d)x^2-x=0
e)(x+2)(x-3)-x-2=0
f)3x^3-27x
Giup mik vs nha
Tìm x, biết:
a) x. (2x - 7) - 4x + 14 = 0
b) x2. (x - 1) - 4x + 4 = 0
c) x + x2 - x3 - x4 = 0
d) 2x3 + 3x2 + 2x + 3 = 0
e) 4x2 - 25 - (2x - 5). (2x + 7) = 0
g) x3 + 27 + (x + 3). (x - 9) = 0
1 tim x
2x^4-6x^3+x^2+6x-3=0
Gpt: a, x4 - 5x3 + 2x2 + 10x + 2 = 0
b, 2x4 + 5x3 + x2 + 5x + 2 = 0
c, 4x4 - 3x3 - 14x2 + 18x + 9 = 0
d, 3x4 + x3 - 7x2 + 2 = 0
j) (2x – 1)(3x + 1) – (4 – 3x)(3 – 2x) = 3
k) (2x + 1)(x + 3) – (x – 5)(7 + 2x) = 8
m) 2(3x – 1)(2x + 5) – 6(2x – 1)(x + 2) = - 6
tìm X nhé