Question

ptich da thuc thanh nhan tu

5x²y + 10xy

x² - 2xy  + y² - 25

x³ - 8 + 2x ( x - 2 )

x⁴ + x²y² + y⁴

tick ạ

Answer 1

a, \(5x^2y+10xy=5xy\left(x+2\right)\)

b, \(x^2-2xy+y^2-25=\left(x-y\right)^2-5^2=\left(x-y-5\right)\left(x-y+5\right)\)

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

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

d, \(x^4+x^2y^2+y^4\):< 

Answer 2

a, 5xy(  x + 2)

b, ( x - y -5 )(x-y+5)

c,( x-2)( x+ 2)²