Question

几道非常简单的因式分解3X^4-48y^4 (x+1)^2-9(x-1)^2 x^2+4xy+3y^2

Answer 1

3X^4-48y^4

=3（x^2+4y^2)(x+2y)(x-2y)

(x+1)^2-9(x-1)^2

=(x+1+3x-3)(x+1-3x+3)

=(4x-2)(4-2x)

=4(x-1)(1-x）

x^2+4xy+3y^2

=（x+2y)^2-y^2

=(x+3y)(x-y)