Пошаговое объяснение:
1)
4а^2-(8а^2-2аb)+(3ab+4a^2)=
=4a^2-8a^2+2ab+3ab+4a^2=
=5ab=5×0,2×3=3
2)
(5xy-x^2)+7x^2-(6x^2-3xy)=
=5xy-x^2+7x^2-6x^2+3xy=
=8xy=8×(-3/2)×1 3/4= - 12×7/4= - 21
Copyright © 2025 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Пошаговое объяснение:
1)
4а^2-(8а^2-2аb)+(3ab+4a^2)=
=4a^2-8a^2+2ab+3ab+4a^2=
=5ab=5×0,2×3=3
2)
(5xy-x^2)+7x^2-(6x^2-3xy)=
=5xy-x^2+7x^2-6x^2+3xy=
=8xy=8×(-3/2)×1 3/4= - 12×7/4= - 21