Answer:
[tex]-3[/tex]
Explanation:
Here, we want to get the value of x
We simply square both sides
Thus, we have it that:
[tex]\begin{gathered} x^2+7\text{ = 4}^2 \\ x^2+7\text{ = 16} \\ x^2=\text{ 16-7} \\ x^2=\text{ 9} \\ x\text{ = }\sqrt{9} \\ x\text{ = }\pm3 \end{gathered}[/tex]
We select -3 as the answer here (although +3 is an option too, it is not a part of the provided options)
