SOLUTION: factor quadratic trinomials completely 3p2-11p-20 I do not understand how to do this. My grand daughter notes are sketchy at best. I need all the help I can get on this

Question 1130010: factor quadratic trinomials completely 3p2-11p-20 I do not understand how to do this. My grand daughter notes are sketchy at best. I need all the help I can get on this

Found 2 solutions by MathLover1, josgarithmetic:
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

.....write as
.............group

Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
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factor quadratic trinomials completely 3p2-11p-20 I do not understand how
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Not as 3p2-11p-20
but
as 3p^2-11p-20

(3p ? )(p ? )

You want to find two unknown numbers so that their product is and so when you would perform the multiplication of the two binomials and simplify, the p term has coefficient . You can make all possible combinations and test each of them until the one that works is found.

Note that .

.

.
( +4 and -5 will work).
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