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Mathematics 18 Online
OpenStudy (anonymous):

factor: x^2+10x+21

jimthompson5910 (jim_thompson5910):

Two numbers that multiply to 21 and add to 10 are...???

OpenStudy (anonymous):

3?

jimthompson5910 (jim_thompson5910):

3 and what?

OpenStudy (anonymous):

not 3! break mid term can i write now x^2+7x+3x+21?

OpenStudy (anonymous):

so its 7,3 right it would be (x+7) and (x+3)

jimthompson5910 (jim_thompson5910):

yes which means \[\Large x^2+10x+21\] factors to \[\Large (x+7)(x+3)\]

OpenStudy (anonymous):

got it

OpenStudy (anonymous):

best response idk! you both helped me! who wants to help with another one and ill give one a medal now?

jimthompson5910 (jim_thompson5910):

go for it

OpenStudy (anonymous):

factor: x^2-x-2

OpenStudy (anonymous):

wait dont do it yet im putting another one up

jimthompson5910 (jim_thompson5910):

list the factors of -2 -2: -1*2 -2*1 Which of those factors add to -1?

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