Question

Найдите значение выражения (a^2+2*a*b)/(a-4*b) - (10*a*b-16*b^2)/(a-4*b)

Answer 1

(aˇ2+2ab)/(a-4b) - (10ab-16bˇ2)/(a-4b)=
=a(a+2b)/(a-4b) - 2b(5a-8b)/(a-4b)=
=(a(a+2b)-2b(5a-8b))/(a-4b)=
=(aˇ2+2ab-10ab+16bˇ2)/(a-4b)=
=(aˇ2-8ab+16bˇ2)/(a-4b)=
=(a-4b)(a-4b)/(a-4b)=a-4b

Answer 2

Спасибо!!!