\(2x\left(x-3\right)-16x^2\left(3-x\right)=0\)
\(\Leftrightarrow2x\left(x-3\right)\left(1+8x\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x=0\\x=3\\x=-\frac{1}{8}\end{matrix}\right.\)
\(2x\left(x-3\right)-16x^2\left(3-x\right)=0\)
\(\Leftrightarrow2x\left(x-3\right)\left(1+8x\right)=0\)
\(\Leftrightarrow\left[{}\begin{matrix}x=0\\x=3\\x=-\frac{1}{8}\end{matrix}\right.\)
tìm x biết
a/x^3+3x^2+3x+2=0
b/x^4-2x^3+2x-1=0
c/x^4-3x^3-6x^2+8x=0
Tìm x biết:
a) (x - 3)2 - 5.(x - 2) + 5 = 0.
b) (2x - 1)2 - 3.(x - 2).(x + 2) - 25 = 0.
c) (x - 1)3 - x2.(x - 2) + 5 = 0.
d) x2 - 4x + 5 = 0.
Tìm x:
a/ \(\left(2x^3-3\right)^2-\left(4x^2-9\right)=0\)
b/ \(x^4+2x^3-6x-9=0\)
c/ \(x^4+2x^3-6x-9\) = 0
d/ \(2\left(x+5\right)-x^2-5x=0\)
tìm x:
x(x-5)-4x+20=0
x(x+6)-7x-42=0
x^3-5x^2+x-5=0
x^4-2x^3+10x^3-20x=0
Tìm x, biết :
a) 2x (x-3) -3 (x-3) = 0
b) 3x (x-4) . x+4 = 0
c) 4x2 - 1 = 0
Bài 1: phân tích các đa thức sau thành nhân tử:
a. x3-2x2+x-2
b. 2x3+3x2-3x-2
c. 5x2+5y2-x2z+2xyz-y2z-10xy
d. x3-3x2y+3xy2-x+y-y3
Bài 2: Tìm x, biết:
a. 4x2-25-(2x-5).(2x+7)=0
b. x3+27+(x+3).(x-9)=0
c. 2x3+3x2+2x+3=0
Tìm x biết rằng
a)x(x-3)+2x-6=0
b)x^2+7x-2(x+7)=0
c)x^2(x-3)-15+5x=0
Tìm x
a) 2-25x2=0
b) x2-x+1/4=0
c) x*(x-2)+x-2=0
d) 5x*(x-3)-x+3=0
e) x3-1/4x=0
g) (2x-1)2-(x+3)2=0
Tìm x biết :
a) x2(x+3)-2x-6=0
b) x3-6x-5=0