Question

calcule
A)(7/5a-2ab+b/3ele.2)+(4ab-b/3ele2)

Answer 1

Resposta:

se for:

7/5a - 2ab + b / 3² + 4ab - b / 3²

fica:

7/9(5a-2ab+b) + 4ab - b / 9

7/45a -18ab+9b + (4ab-b)(5a-2ab+b)/45a-18ab+9b =

7 + 20a²b-8a²b²+4ab²-5ab + 2ab²-b² =

20a²b - 8a²b² + 4ab² + 2ab² - 5ab - b² =

20a²b - 8a²b² + 6ab² - 5ab - b² =

b(20a² - 8a²b + 6ab - 5a - b)