Factor out of .
Factor out of .
Factor out of .
Factor out of .
Factor out of .
Factor using the AC method.
Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .
Write the factored form using these integers.
Remove unnecessary parentheses.
Divide each term in by .
Cancel the common factor.
Divide by .
Divide by .
If any individual factor on the left side of the equation is equal to , the entire expression will be equal to .
Set the first factor equal to .
Subtract from both sides of the equation.
Set the next factor equal to .
Subtract from both sides of the equation.
The final solution is all the values that make true.
Solve by Factoring 3x^2+18x+15=0