=4(x²+2x+1)=4(x+1)²

4x² + 8x + 4

= 4 ( x² + 2x + 1 )

= 4 ( x + 1 )²

=4(x+1)²

(x^2-6x+8)(x^2-8x+15)+1

=(x^2-4x-2x+8)(x^2-5x-3x+15)+1

=(x(x-4)-2(x-4))(x(x-5)-3(x-5))+1

=(x-4)(x-2)(x-5)(x-3)+1

=(x-2)(x-5)(x-3)(x-4)+1

=(x^2-7x+10)(x^2-7x+12)+1

Gọi a=x^2-7x+11, ta có

(a-1)(a+1)+1

= a² - 1 + 1

= a²

= (x² - 7x + 11)²

a) (x³-x²)+(8x-8)=x(x-1)+8(x-1)=(x²+8)(x-1)

b) 8x³-8x²y+2xy²=2x(4x²-4xy+y²)

c) (x²+y²-z²)² - 4x²y²=(x²+y²-z²)² - (2xy)²=(x²+y²-z²-2xy)(x²+y²-z²+2xy)

b)=x^3+x^2+4x^2+4x+4x+4=x(x+1)+4x(x+1)+4(x+1)=(x+1)(x+4x+4)

Thiên Ân ơi, bạn giải giúp mình câu c được kh

Mình ko thêm bớt hạng tử nhé.

\(8x^3-3x+6x^2-1\)

\(=\left(8x^3-1\right)+\left(6x^2-3x\right)\)

\(=\left(2x-1\right)\left(4x^2+2x+1\right)+3x\left(2x-1\right)\)

\(=\left(2x-1\right)\left[\left(4x^2+2x+1\right)+3x\right]\)

\(=\left(2x-1\right)\left(4x^2+5x+1\right)\)

\(=\left(2x-1\right)\left[4x\left(x+1\right)+\left(x+1\right)\right]\)

\(=\left(2x-1\right)\left(x+1\right)\left(4x+1\right)\)

\(8x^3-3x+6x^2-1=\left(8x^3-12x^2+6x-1\right)+\left(18x^2-9x\right)\)

\(=\left(\left(2x\right)^3-3\cdot\left(2x\right)^2\cdot1+3\cdot2x\cdot1^2-1^3\right)+\left(18x^2-9x\right)\)

\(=\left(2x-1\right)^3+9x\left(2x-1\right)=\left(2x-1\right)\left(\left(2x-1\right)^2+9x\right)\)

\(=\left(2x-1\right)\left(4x^2-4x+1+9x\right)=\left(2x-1\right)\left(4x^2+5x+1\right)\)

bạn giải thích bước thêm bớt hạng tử dc k

a/ (x - 1)(x - √3 + 2)(x + √3 + 2)

a ) \(x^3+3x^2-3x+1\)

    \(=x^3-3x+3x^2-1\)

     \(=\left(x-1\right)^3\)

c/ (x + 1)(x + \(\frac{\sqrt{21}-5}{2}\))(x + \(\frac{-\sqrt{21}-5}{2}\))

\(4x^4-8x^3+3x^2-8x+4\)

\(=\left(4x^4-8x^3\right)+\left(3x^2-6x\right)-\left(2x-4\right)\)

\(=4x^3\left(x-2\right)+3x\left(x-2\right)-2\left(x-2\right)\)

\(=\left(x-2\right)\left(4x^3+3x-2\right)\)

Hãy tích cho tui đi

khi bạn tích tui

tui không tích lại bạn đâu

THANKS

a, 3x³-8x²+8x-5

= x²(3x-5)-x(3x-5)+3x-5

=(3x-5)(x²-x+1)

b, 4x³-3x²+5x-21

= x²(4x-7) +x(4x-7)+3(4x-7)

=(4x-7)(x²+x+3)