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Mathematics 45 Online
OpenStudy (anonymous):

Help please? Select the factors of x2 − 14x + 49. (x + 49)(x + 1) (x + 7)(x + 7) (x − 7)(x − 7) (x − 49)(x − 1)

OpenStudy (anonymous):

\[x ^{2}-14x+49\] Right ?

OpenStudy (anonymous):

Yes, the question then asked to select what the factors are for it

OpenStudy (jackellyn):

What two numbers when multiplied give 49 and when added give you -14? 49 ---> 7,7 ; 49,1 Do either of those combinations give you -14 when added?

OpenStudy (anonymous):

@hooverst

OpenStudy (anonymous):

No neither of them do? So I don't get what the answer would be @jackellyn

OpenStudy (anonymous):

you should get (x+7)(x+7)

OpenStudy (anonymous):

That's what I was going to guess, so thanks :) @hooverst

OpenStudy (jackellyn):

Hint: -7-7=-14

OpenStudy (anonymous):

So would it be (x − 7)(x − 7) instead? @jackellyn

OpenStudy (anonymous):

yes

OpenStudy (jackellyn):

Since the equation is x^2 - 14x +49 The numbers have to give you -14 So, it should be (x-7)(x-7).

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Ohh, okay. Thanks guys! @hooverst @jackellyn

OpenStudy (anonymous):

your welcome.

OpenStudy (jackellyn):

You can check by FOILing First Outside Inside Last x(x) -7(x) -7(x) (-7)(-7) x^2 -7x -7x +49

OpenStudy (anonymous):

right ! :)

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