How do you simplify $(7b^2 – 5b + 3) – (b^2 + 8b – 6)$ ?

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Answer 1 · 2015-04-08T03:58:25

You can try this: (tira os parênteses, lembrando que o menos troca todos de sinal dentro a segunda, e depois soma os termos parecidos)

$7b^2-5b+3-b^2-8b+6=6b^2-13b+9$

How do you simplify (7b^2 – 5b + 3) – (b^2 + 8b – 6)(7b^2 – 5b + 3) – (b^2 + 8b – 6)?