Question

(4a+5b)^3-(4a+5b)^3-75b^2(16a^2-25b^2)​

Answer 1

Step-by-step explanation:

(4a+5b)^3-(4a+5b)^3-75b^2(16a^2-25b^2)

=-75b^2(16a^2-25b^2)

=-1200a^2b^2+1875b^4