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anonymous
 one year ago
Determine which polynomial has (x9) as a factor.
A. x^26+9
B. x^2+16x+63
C. x^2+14x+45
D. x^212x+27
anonymous
 one year ago
Determine which polynomial has (x9) as a factor. A. x^26+9 B. x^2+16x+63 C. x^2+14x+45 D. x^212x+27

This Question is Closed

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0@Mumustar78612 what does that mean? +x^2 is not a factor or relevant to this question @sunrise14 do oyu want ot know how to do this?

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0ok so you know that we are looking for 2 factors that make the original equation AND you know that 1 of those factors is (x9) OK so far?

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0ok so the x^2 term comes from multiplying th efirst two terms of the brackets together and in this case it is 1*x^2 so the factors must be (x9) (xa) (so that x*x gives us x^2) OK so far?

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0ok now look at the last term it is 9 *x so looking at the answers for answer a, x would be 1 (to give +9) for answer b, x would be 7 (to give +63) for answer c, x would be 5 (to give +45) for answer a=d, x would be 3 (to give +27) so now you need to find which ofthose would work out to give the correct middle factor when you expand the brackets

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0so for a (x9)(x1) b (x9)(x7) c (x9)(x5) d (x9)(x3) which one expands to give the full quadratic answer correctly?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I believe I would lean to c but MrNood is a human calculator

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0to be honest, i dont know

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Well you can factor the same expression different ways. Do you know how to factor?

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0ok = I have written the possible factors for all the answers We know these are the possible ones because the first term must be x (to give us x^2) and the last term must be as written to give us the constant) SO Multiply them all out using FOIL method and see which one turns out to be a correct result

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i did it in a certain way that was on the video but im still confused

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0So for a multiply this (x9)(x1)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i get confused trying to do that, can you draw?

MrNood
 one year ago
Best ResponseYou've already chosen the best response.0no you need that as a core skill to do factorising If you can't do it then you need to go back and learn it I promise you  time spent learning that method NOW will be repaid many times in the course of your future studies
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