Question

Urgente pfvr!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ​

Answer 1

Resposta:

(x₁; y₁) = (3; 2)

(x₂; y₂) = (-3; -10)

Explicação passo a passo:

$\left[\begin{array}{ccc}x^{2}&-1\\4&0\end{array}\right]=\left[\begin{array}{ccc}9&-1\\2x-y&0\end{array}\right]$

$\left \{ {{x^{2}=9} \atop {2x-y=4}} \right.$

$x^{2}=9\\x=^{+}_{-}\sqrt{9}\\x=^{+}_{-}3$

• Para x = 3

$2x-y=4\\2*3-y=4\\6-y=4\\-y=-2\\y=2$

• Para x = -3

$2x-y=4\\2*(-3)-y=4\\-6-y=4\\-y=10\\y=-10$