Question

Solve the following equation, Write your answer in reduced fraction form, if necessary. (x - 9)(x +9) = 0 Separate multiple entries with commas.

Answer 1

To solve the equation given we need to remember that the product between two numbers is zero if and only if one of the factors is zero, this means that:

$\begin{gathered} x-9=0 \\ or \\ x+9=0 \end{gathered}$

Solving each of the equation we have:

$\begin{gathered} x-9=0 \\ x=9 \\ or \\ x+9=0 \\ x=-9 \end{gathered}$

Therefore the solutions of the equation are x=9 or x=-9