Question

How to solve m squared +7=88

Answer 1

Step-by-step explanation:

`m^2+7=88`

First we have to substract 7 from both sides of the equation:

`\begin{gathered} m^2+7-7=88-7 \\ m^2=81 \end{gathered}`

Now we have to take square root on both sides. The square root has two results, one negative and one positive:

`\begin{gathered} \sqrt[]{m^2}=\pm\sqrt[]{81} \\ m=\pm9 \end{gathered}`

Answer:

The solutions are:

• 9

,

• -9