\(\left(2x^2-1\right)^2-2\left(2x^2-1\right)+1=0\Leftrightarrow\left(2x^2-1-1\right)^2=0\)\(\Leftrightarrow\left(2x^2-2\right)^2=0\)
\(\Rightarrow2\left(x^2-1\right)=0\)
\(\Rightarrow2\left(x+1\right)\left(x-1\right)=0\Rightarrow\left[{}\begin{matrix}x+1=0\\x-1=0\end{matrix}\right.\Rightarrow\left[{}\begin{matrix}x=-1\\x=1\end{matrix}\right.\)
Tìm x:
b, \(\left(2x-1\right)^2+\left(x+3\right)^2-5\left(x+7\right)\left(x-7\right)=0\)
c, \(\left(x-2\right)^3-\left(x-4\right)\left(x^2+4x+16\right)+6\left(x+1\right)^2=49\)
d, \(\left(x+2\right)\left(x^2-2x+4\right)-x\left(x^2+2\right)=15\)
Tìm x:
a/\(x^2\left(x+1\right)+2x\left(x+1\right)=0\)
b/\(x\left(3x-2\right)-5\left(2-3x\right)=0\)
1 . Tìm x biết rằng :
a) \(2\left(2x-1\right)^2-\left(x-3\right)^2=\left(x+1\right)\left(7x+2\right)\)
b) \(\left(x+1\right)^3=4x+4\)
Tìm x,biết: \(a\)) \(x^2\left(x+1\right)+2x\left(x+1\right)=0\)
Phân tích đa thức thành nhân tử:
1). (x - 3)(x - 1) - 3(x - 3)
2). (6x + 3) - (2x - 5)(2x + 1)
3). (x - 1)(2x + 1) + 3(x - 1)(x + 2)(2x + 1)
4). (3x - 2)(4x - 3) - (2 - 3x)(x - 1) - 2(3x - 2)(x + 1)
5). \(\left(x-5\right)^2+\left(x+5\right)\left(x-5\right)-\left(5-x\right)\left(2x+1\right)\)
6). (a - b)(a + 2ab) - (b - a)(2a - b) - (a - b)(a + 3b)
1 . Tìm GTNN của biểu thức :
M = \(x^2-4xy+4y^2-2x+4y+10\)
2 . Tìm x :
a) \(\left(x+1\right)^3+\left(x-2\right)^3=2x^3+2\left(2x-1\right)^2-9\)
b) \(\left(3x^3+24\right):\left(x+2\right)+\left(2x^3-54\right):\left(x^2+3x+9\right)=6\)
( Mk đang cần gấp . đảm bảo tick trả đầy đủ )
Tìm x :
a) \(4x^2-8x=0\)
b) \(\left(x+5\right)-3x\left(x+5\right)=0\)
c) \(2x\left(x-4\right)^2-\left(x-4\right)=0\)
d) \(3x\left(x-1\right)+\left(1-x\right)^2=0\)
e) \(5x\left(x-9\right)^2-\left(9-x\right)^3=0\)
tìm x biết :
a.\(5\left(x+3\right)-6x-2x^2=0\)
b.\(\left(x-2004\right)=8016x-4x^2\)
c.\(\left(x+1\right)^2=x+1\)
Tìm x :
a) \(\left(4x^3+2x^2+199x\right):x=2005\)
b) \(2\left(x-1\right)^2+3\left(x-2\right)^2=5\left(x+2\right)\left(x+1\right)+4\)
