Question

resolva os sistemas:

{x + y=20
{3× + 4y = 72

{x+ y = 4
{x - y = 8

{x + y = 0
{2x + y = 0

{x + y = 4
{x - y = -2 ​

Answer 1

Resposta:

$\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right] \lim_{n \to \infty} a_n \int\limits^a_b {x} \, dx \left \{ {{y=2} \atop {x=2}} \right. \\ \leq x^{2} \geq \sqrt{x} \neq \sqrt[n]{x} \pi \frac{x}{y} \alpha x_{123} \beta$

Explicação passo a passo: