How do you solve #\frac { ( x + 9) ( x - 7) } { 2} = 18#?
1 Answer
May 15, 2017
Explanation:
Multiply both sides by
Now expand the left side:
Add
Complete the square by adding
Factor the left side:
Square root both sides. Remember that you will have a positive and negative solution:
Solve for
Evaluate
Solve for the two