Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
= (x^6 - x^4) - (9x^3 - 9x^2)
= x^4 (x^2 +1) - 9x^2 (x - 1)
= x^4 (x + 1) (x - 1) - 9x^2 (x - 1)
= (x - 1) {x^4 (x + 1) - 9x^2}
= (x - 1) (x^5 + x^4 - 9x^2)
= (x -1) {x^2 (x^3 + x^2 - 9)}
x6 - x 4- 9x3 + 9x2
= (x6 - x 4) - (9x3 - 9x2)
= x4 (x2 - 1) - 9x2 (x - 1)
= x4 (x-1) (x+1) - 9x2 (x - 1)
= x2 (x-1) (x2 (x+1) - 9)
= x2 (x-1) (x3 + x2 - 9)
x3 + 7x - 6=x2 . x + 7x - 22 + 2 = (x2 - 22) + (x+7x)+2=(x-2) . (x+2) + 8x + 2
x3 - 5x + 8x - 4=x2 . x -5x + 8x -22 = (x2 - 22) . (x -5x + 8x )=(x-2) . (x+2) . 4x
x3 - 9x2 + 6x + 16=x2 . x - 9x2 + 6x + 16 = (x2 - 9x2) . (x+6x) + 16=(x-9x) . (x+9x) . 7x + 16
k mk nha
\(x^2-4y^2+4y-1=x^2-\left(2y-1\right)^2=\left(x+2y-1\right)\left(x-2y+1\right)\)
\(x^4+3x^3-9x-9\)
\(=x^4-9+3x^3-9x\)
\(=\left(x^2-3\right)\left(x^2+3\right)+3x\left(x^2-3\right)\)
\(=\left(x^2-3\right)\left(x^2+3+3x\right)\)
\(x^3+9x^2+6x-16\)
\(=x^3+x^2-2x+8x^2+8x-16\)
\(=x\left(x^2+x-2\right)+8\left(x^2+x-2\right)\)
\(=\left(x^2+x-2\right)\left(x+8\right)\)
\(=\left(x^2-x+2x-2\right)\left(x+8\right)\)
\(=\left[x\left(x-1\right)+2\left(x-1\right)\right]\left(x+8\right)\)
\(=\left(x-1\right)\left(x+2\right)\left(x+8\right)\)
\(=x^2\left(x-3\right)-9\left(x-3\right)=\left(x^2-9\right)\left(x-3\right)\)
\(=\left(x-3\right)^2\left(x+3\right)\)
x3 - 3x2 - 9x + 27
= ( x3 - 3x2 ) - ( 9x - 27 )
= x2( x - 3 ) - 9( x - 3 )
= ( x - 3 )( x2 - 9 )
= ( x - 3 )( x - 3 )( x + 3 )
= ( x - 3 )2( x + 3 )
\(x^6-x^4-9x^3+9x^2\)
\(\left(x^6-x^4\right)-\left(9x^3-9x^2\right)\)
\(x^4\left(x^2-x\right)-9x\left(x^2-x\right)\)
\(\left(x^2-x\right)\left(x^4-9x\right)\)