Question

determine o valor das expressoes


x^{2} +2y para x = -2 e y= -1
_______
y-3x²

Answer 1

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Solução!

$\dfrac{ x^{2} +2y}{y-3 x^{2} }\\\\\\ \dfrac{ (-2)^{2} +2(-1)}{-1-3 (-2)^{2} }\\\\\\ \dfrac{ 4 -2}{-1-3 .4 }\\\\\\ \dfrac{ 4 -2}{-1-12 }\\\\\\ -\frac{2}{13}\\\\\\\\\\\\ \boxed{Resposta: -\frac{2}{13}}$

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