Question

5x2+90=0 solve equation

Answer 1

The given equation is

`5x^2+90=0`

First, subtract 90 from each side.

`\begin{gathered} 5x^2+90-90=-90 \\ 5x^2=-90 \end{gathered}`

Second, divide both sides by 5.

`\begin{gathered} (5x^2)/(5)=-(90)/(5) \\ x^2=-18 \end{gathered}`

Fourth, apply a square root on both sides.

`\begin{gathered} \sqrt[]{x^2}=\sqrt[]{-18} \\ x=\sqrt[]{-18} \end{gathered}`

The equation has no real solutions because the square root of a negative number does not exist.