Question

Bài 1. Phân tích đa thức bằng nhân tử.
a) x³ - 4x
b) 2x³ - 8x
c) 2x² + 6x
d) 10x + 15y

Answer 1

\(a,x^3-4x=x\left(x^2-4\right)=x\left(x-2\right)\left(x+2\right)\\ b,2x^3-8x=2x\left(x^2-4\right)=2x\left(x-2\right)\left(x+2\right)\\ c,2x^2+6x=2x\left(x+3\right)\\ d,10x+15y=5\left(2x+3y\right)\)

Tick plz

Answer 2

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

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

c. \(2x^2+6x=2x\left(x+3\right)\)

d. \(10x+15y=5\left(2x+3y\right)\)

Answer 3

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

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

c) \(2x^2+6x=2x\left(x+3\right)\)

d) \(10x+15y-5\left(2x+3y\right)\)