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Mathematics 7 Online
OpenStudy (anonymous):

In your own words, explain how a trinomial of the form 2x2 + 13x + 15 can be turned into a four term polynomial suitable for factoring by grouping. Use complete sentences.

OpenStudy (jim766):

what two numbers mult to get 30, but add to get 13 30 = a*c b

OpenStudy (jim766):

1*30 2*15 3*10 5*6

OpenStudy (anonymous):

srry was afk but C

OpenStudy (jim766):

so 2x^2 +10x + 3x+ 15

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

15x^2 + 15

OpenStudy (anonymous):

Jim is this my final answer?

OpenStudy (anonymous):

\[ \text{ Break the Middle term into two numbers , A and B, that, when added, equal } \\ \text{ 13 and when multiplied equal 30}\\\\ 2x^2 +10x + 3x + 15 \\ 2 x( x + 5 ) + 3( x + 5) \\ ( 2x + 3) ( x +5 ) \\ \]

OpenStudy (anonymous):

thanks luis

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