Question

(a^4-16b^4)÷(a^2+4b^2)÷(2b-a)=

Answer 1

a^4-16b^4=(a^2+4b^2)(a^2-4b^2)

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

(a^4-16b^4)÷(a^2+4b^2)÷(2b-a)

=(a^2-4b^2)÷(2b-a)

=-a-2