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anonymous
 4 years ago
Explain how the trinomial 2x2+ 13x + 15 can be turned into a four term polynomial suitable for factoring by grouping. Use complete sentences.
anonymous
 4 years ago
Explain how the trinomial 2x2+ 13x + 15 can be turned into a four term polynomial suitable for factoring by grouping. Use complete sentences.

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Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Multiply the 2 and the 15 and find factors of 30 whose sum is 13 and then rewrite 13x as the sum of those two numbers. For example, 10 x3 = 30 and 10 + 3 is 13 so replace 13x with 10x + 3x

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.02 * 15 = 30  we need three factors which can be made to equal 13  these are 2 , 3 and 5 ( 2*5 + 3) so we write 2x^2 + 3x + 5x + 15 we need 2*5 so we factor as follows 2x(x+5) + 3(x+5) = (2x + 3)(x + 5)

Mertsj
 4 years ago
Best ResponseYou've already chosen the best response.1Now you have 2x^2+10x+3x+15 Factor it by grouping
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