Question

[tex]5( {x}^{2} - 7) = 3(4 + {x}^{2}) + 5

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Answer 1

Respuesta:

Explicación paso a paso:

$[tex]5(x^{2} -7)=3(4+x^{2} )+5\\5x^{2} -35= 12+3x^{2} +5\\5x^{2} -3x^{2} = 35+12+5\\2x^{2} = 52\\x^{2} = \frac{52}{2}\\ x^{2} = 26\\\\x= \sqrt{26}$