SOLUTION: x^2-2x-15=0

Question 147296: x^2-2x-15=0
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
x^2-2x-15=0
.
Attempt to "factor" first
Failing that, then use the "quadratic equation".
.
When factoring:
ask yourself what two factors of 15 will combine to give you -2.
.
Factors of 15:
1 15
3 5
.
Therefore, it would be:
(x+3)(x-5) = 0
.
To find the solution, set each of the above factors to zero and solve:
x+3 = 0
x = -3
.
x-5=0
x = 5
.
Solution: {0,5}

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