Question

What is the solution to the equation below? √x - 4 = -2 O A. X=& O B. X=4 X = 4 C. x = 6 D. X = 2

Answer 1

x = 4

Step-by-step explanation:

Given the expression;

`\sqrt[]{x}-4\text{ = -2}`

Add 4 to both sides

`\begin{gathered} \sqrt[]{x}-4+4\text{ = -2+4} \\ \sqrt[]{x}=\text{ 2} \end{gathered}`

Square both sides

`\begin{gathered} (\sqrt[]{x})^2=2^2 \\ x\text{ = 4} \end{gathered}`

Hence the value of x is 4