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)

Question

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)

anonymous · Answer

$$x ^{2}-14x+49$$

Right ?

anonymous · Answer

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

jackellyn · Answer

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?

anonymous · Answer

@hooverst

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

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

jackellyn · Answer

Hint: -7-7=-14

anonymous · Answer

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

anonymous · Answer

yes

jackellyn · Answer

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

anonymous · Answer

yes

anonymous · Answer

Ohh, okay. Thanks guys! @hooverst @jackellyn

anonymous · Answer

your welcome.

jackellyn · Answer

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

anonymous · Answer

right ! :)