Question

Adicione ou subtraia os seguintes polinômios:

a) (20x²–17x+12) – (12x²+3x–12) =

b) (– 27ab²–18c+17) + (–13ab²+19c–25) =​

Answer 1

Resposta:

Boa tarde!

Explicação passo-a-passo:

a) (20x²–17x+12) – (12x²+3x–12) =

8x²  - 20x + 24

b) (– 27ab²–18c+17) + (–13ab²+19c–25) =​

- 40ab² + c - 8

$\left[\begin{array}{cccc}+&+&=&+\\+&-&=&-\\-&+&=&-\\-&-&=&+\end{array}\right]$