SOLUTION: (x-3)(x^2+3x-2) what formula do I use?

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Question 471848: (x-3)(x^2+3x-2)
what formula do I use?
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!
.
we know if ...->.............first solution

take and complete the square

.....to the both sides add square of of coefficient of middle term (which is ):




now we can apply square root method to find other two solutions
if , then or
in your case and
consequently



......second solution

or



........third solution
check:
...........first solution




...... ......second solution








you can check third one by yourself


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