Question

Phân tích đa thức thành nhân tử:

a,x^2-25

b,x^2-x^4

Answer 1

a) \(x^2-25=x^2-5^2=\left(x+5\right)\left(x-5\right)\)

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

Answer 2

a) \(x^2-25=x^2-5^2=\left(x+5\right)\left(x-5\right)\)

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

Answer 3

\(a,x^2-25=x^2-5^2=\left(x-5\right)\left(x+5\right)\)

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

Answer 4

a) x² - 25 = x²-5² = ( x-5).(x+5)

b) x² -x⁴ = (x-x² ).(x+x²)= (\(\sqrt{x}\)-x).(\(\sqrt{x}\)+x) (x+x² )