Question

Phân tích đa thức thành nhân tử:

c) (3x+3y)+(x²-y²)

d) x⁴-y⁴

Answer 1

\(a,=3\left(x+y\right)+\left(x-y\right)\left(x+y\right)\\ =\left(x+y\right)\left(3+x-y\right)\\ \\ d,=\left(x^2-y^2\right)\left(x^2+y^2\right)\\ =\left(x-y\right)\left(x+y\right)\left(x^2+y^2\right)\)

Answer 2

c)(3x+3y)+(x²-y²)=3(x+y)+(x-y)(x+y)=(x+y)(3+x-y)
d)x⁴-y⁴=(x²-y²)(x²+y²)=(x-y)(x+y)(x²+y²)