Question

Solve for x 3 - square root of x = 0

Answer 1

x = 9

Explanation:

`3-√(x)=0\\\\\text{Domain:}\ x\geq0\\\\3-√(x)=0\qquad\text{add}\ √(x)\ \text{to both sides}\\\\3=√(x)\to√(x)=3\\\\\text{Use the de}\text{finition of a square root:}\ √(a)=b\iff b^2=a\\\\√(x)=3\iff x=3^2\\\\x=9`