Question

Qual o resultada da operação: -45ab²c+243b²ac-35cab²+200ab²c *
2 pontos
165abc²+243b²ac-35cab²
363ab²c
404ab²c
165abc²+208b²ac

Answer 1

Oie, tudo bom?

Resposta: 363ab²c.

$= - 45a b{}^{2} c + 243b {}^{2} ac - 35cab {}^{2} + 200ab {}^{2} c \\ = - 45ab {}^{2} c + 243ab {}^{2} c - 35ab {}^{2} c + 200ab {}^{2} c \\ = ( - 45 + 243 - 35 + 200)ab {}^{2} c \\ = ( - 80 + 243 + 200)ab {}^{2} c \\ = ( - 80 + 443)ab {}^{2} c \\ \boxed{ = 363ab {}^{2} c}$

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