Question

2x2 - y2 = 49
x + 1 = 14​

Answer 1

Respuesta:

$\left \{ {{2x^{2}- y^{2} =49} \atop {x+1=14}} \right. \\2x^{2}- y^{2} =49 \\x= \sqrt{ \frac{49+y^{2} }{2} } \\x= 13\\X = X \\( \sqrt{ \frac{49+y^{2} }{2} })^{2} = (13)^{2} \\\frac{49+y^{2} }{2} = 169\\\sqrt{y^{2}} =\sqrt{169(2)-49} \\y=17\\\\Comprobacion\\x= \sqrt{ \frac{49+(17)^{2} }{2} } = 13$