Ответ:
a(2a+b)-b(a-2b)-(a^2-b^2)=2a^2+ab-ab+2b^2-a^2+b^2= a^2+3b^2
a^2+3b^2=3,5^2+3•1 1/5^2=(7/2)^2+3•36/25= 49/4+108/25= 1657/100
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
a(2a+b)-b(a-2b)-(a^2-b^2)=2a^2+ab-ab+2b^2-a^2+b^2= a^2+3b^2
a^2+3b^2=3,5^2+3•1 1/5^2=(7/2)^2+3•36/25= 49/4+108/25= 1657/100