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ahoymewmew
 2 years ago
what is the factor of this trinomial a2 + 4ab – 45b2?
ahoymewmew
 2 years ago
what is the factor of this trinomial a2 + 4ab – 45b2?

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ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1Because it is + then  we know it needs to be in the form ( a + b )( a  b )

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1I would first look at the coefficient of b^2 which as 45 and write down all the numbers when multiplied will give you 45.

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1Then look at these numbers and see which two when added will give you 4. And excuse my last post, I should have said find all the products that will give you 45

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1Let me know if you are still stuck

ahoymewmew
 2 years ago
Best ResponseYou've already chosen the best response.0@ChmE so you multiply all the products that equal to 45 and then add the two that will give you 4?

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1That is a thought process for solving it. 9,5 9,5 1,45 1,45 I think thats it. Then you think what numbers, when added will give me 4. you see 9,5

ChmE
 2 years ago
Best ResponseYou've already chosen the best response.1and if you look at my first post, you see the form it needs to be is consistent with these numbers. So ( a + 9b ) ( a  5b )
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