Question

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Calcular: K = $x^{2}$ - $y^{2}$

Answer 1

Explicación paso a paso:

$x = \frac{ - 7 + 3}{2} = \frac{ - 4}{2} = - 2$

$y = \frac{ - 3 + 5}{2} = \frac{2}{2} = 1$

➡️

x²-y²= (-2)²-(1)²

x²-y²= 4-1

x²-y²= 3