Question

Решите уравнение $sqrt{7- sqrt{2} + sqrt{x} =2}$

Answer 1

$sqrt{7-sqrt2+sqrt{x}}=2; ,; ; ; ; ODZ:; left { {{x geq 0} atop {7-sqrt2+sqrt{x} geq 0}} right. ; to ; x geq 0\\7-sqrt2+sqrt{x}=4\\sqrt{x}=4-7+sqrt2\\sqt{x}=-5+sqrt2 textless 0; ; ; ; (-5+sqrt2approx -5+1,4=-3,6)\\Otvet:; ; net; ; reshenij; .$