SOLUTION: How do you solve the problem 3x^2-15x-7=0 using complete the square?
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Question 992366: How do you solve the problem 3x^2-15x-7=0 using complete the square?
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
... group first two terms together
...factor out
.........complete the square of
to do it, recall that
so, we need to add inside parentheses then subtract it outside parentheses
we do not know , but we know and and we can find
=>=> and
now add it to , and do not forget to multiply by ones you subtract because is in front of parentheses
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