Question

(3x²+7) / (x²+4) = 2 ​

Answer 1

Answer:

$\frac{3 {x}^{2} + 7}{ {x}^{2} + 4 } = 2 \\ \\ 3 {x}^{2} + 7 = 2( {x}^{2} + 4) \\ \\ 3 {x}^{2} + 7 = 4 {x}^{2} + 8 \\ \\ 7 - 8 = 4 {x}^{2} - 3 {x}^{2} \\ \\ - 1 = {x}^{2} \\ \\ \\ so \: \: \: {x}^{2} = - 1$