Question

[8.06] Select the factors of x2 − 14x + 49.

(x + 49)(x + 1)

(x + 7)(x + 7)

(x − 7)(x − 7)

(x − 49)(x − 1)

Answer 1

you are supposed to recognize this as a perfect square, since \(49=7^2\) and \(2\times 7=14\)

Answer 2

it is the square \((x-7)^2\) even though that is not one of your answer choices
try instead \((x-7)(x-7)\)

Answer 3

so its C? right?

Answer 4

yes

Answer 5

it is almost always C anyway