Question

Phân Tích đa thức sau thành phân tử

a) 5x +10y

b)3x³ - 12x

c) 4x²+ 9x - 4xy -9y

d) 3x²+ 5y - 3xy - 5x

e)3y² - 3z² + 3x² + xy

Answer 1

a) \(5x+10y=5\left(x+2y\right)\)

b) \(3x^3-12x=3x\left(x^2-4\right)=3x\left(x-2\right)\left(x+2\right)\)

c) \(4x^2+9x-4xy-9y=4x\left(x-y\right)+9\left(x-y\right)=\left(x-y\right)\left(4x+9\right)\)

d) \(3x^2+5y-3xy-5x=3x\left(x-y\right)-5\left(x-y\right)=\left(x-y\right)\left(3x-5\right)\)