Pré-álgebra Exemplos

$3 x^{2} - 5 x + 12$ $5 x^{2} + x - 11$

Etapa 1

Some as expressões.

$3 x^{2} - 5 x + 12 + 5 x^{2} + x - 11$

Etapa 2

Some $3 x^{2}$ e $5 x^{2}$ .

$8 x^{2} - 5 x + 12 + x - 11$

Etapa 3

Some $- 5 x$ e $x$ .

$8 x^{2} - 4 x + 12 - 11$

Etapa 4

Subtraia $11$ de $12$ .

$8 x^{2} - 4 x + 1$

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