Pré-álgebra Exemplos Simplificar e avaliar expressões

Simplificar

$(y^{2} - 2 y - 8) + (y^{2} + y - 12)$

Etapa 1

Remova os parênteses.

$y^{2} - 2 y - 8 + y^{2} + y - 12$

Etapa 2

Some $y^{2}$ e $y^{2}$ .

$2 y^{2} - 2 y - 8 + y - 12$

Etapa 3

Some $- 2 y$ e $y$ .

$2 y^{2} - y - 8 - 12$

Etapa 4

Subtraia $12$ de $- 8$ .

$2 y^{2} - y - 20$

Insira SEU problema

Simplificar e avaliar expressões

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$