Question

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

Answer 1

Respuesta:

2 × $\sqrt{x}$ - 4 = 2

2 × $\sqrt{x}$ = 2 + 4

2 × $\sqrt{x}$ = 6

$\sqrt{x}$ = 6 ÷ 2

$\sqrt{x}$ = 3

x = 3²

x = 9