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Mathematics 11 Online
OpenStudy (anonymous):

factor completely 20x^2+100x+125

OpenStudy (mertsj):

First pull out the common factor 5

OpenStudy (anonymous):

ok then whats next

OpenStudy (mertsj):

Multiply 4 times 25 and try to think of factors of 100 whose sum is 25

OpenStudy (anonymous):

i dont think there is one

OpenStudy (mertsj):

What is 5 x 20?

OpenStudy (anonymous):

1oo

OpenStudy (mertsj):

What is 5 + 20?

OpenStudy (anonymous):

oh okay my apologies

OpenStudy (mertsj):

Whoops. Should have been factors of 100 who sum is 20 so that would be 10 and 10. Replace 20x with 10x+10x and factor by grouping.

OpenStudy (mertsj):

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