Choose two trinomials from the list below to factor. Using complete sentences, explain how to factor each one. Be sure that the final factorization (or "answer") is a part of your explanation.
2x2 + 13x + 15
2x2 + 27x + 13
5x2 − 2x − 7
10x2 − 7x − 3
8x2 − 11x + 3
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OpenStudy (anonymous):
@Mertsj please help
OpenStudy (mertsj):
You've got to pick one first.
OpenStudy (anonymous):
Which will be the fastest?
OpenStudy (anonymous):
Dont want to sound lazy but I need to get this question done /:
OpenStudy (mertsj):
Generally small numbers are easier.
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OpenStudy (mertsj):
Multiply 5 and -7.
OpenStudy (mertsj):
Think of factors of -35 whose sum is -2
OpenStudy (mertsj):
For example: Factors of 12 whose sum is 7 are 4 and 3
OpenStudy (mertsj):
Because 4 times 3 = 12 and 4+3=7
OpenStudy (mertsj):
Now you find factors of -35 whose sum is -2
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OpenStudy (anonymous):
by* not b
OpenStudy (mertsj):
7 times 5 is NOT -35
OpenStudy (mertsj):
And 7+5 is 12 NOT -2
OpenStudy (anonymous):
Sorry I just cant find the answer
OpenStudy (mertsj):
Write down all the factors of -35
I'll get you started:
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