Question

分解因式：a的4次方-8a方b方+16b的4次方

Answer 1

a的4次方用a^4表示

a^4-8a^2b^2+16b^4

=(a^2-4b^2)^2

=[(a+2b)(a-2b)]^2

=(a+2b)^2(a-2b)^2