Question

√x+√x+11 +√x-√x+11=4?​

Answer 1

Resposta:

$\sqrt{x} + \sqrt{x + 11} + \sqrt{x} - \sqrt{x - 11} = 4 \\ \sqrt{x} + \sqrt{x} = 4 \\ 2 \sqrt{x} = 4 \\ \sqrt{x} = \frac{4}{2} \\ \sqrt{x} = 2 \\ { \sqrt{x} }^{2} = {2}^{2} \\ x = 4 \\ \\ \\ \sqrt{4} + \sqrt{4 + 11} + \sqrt{4} - \sqrt{4 + 11} = 4 \\ \sqrt{?} + \sqrt{4} = 4 \\ 2 + 2 = 4 \\ 4 = 4$