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alina1380 [7]
3 years ago
7

Factor the expression below. x2 - 49

Mathematics
2 answers:
devlian [24]3 years ago
7 0

Answer:

(x+7)(x-7)

Step-by-step explanation:

These are perfect squares. Whenever you have perfect squares, you can take the square root of the constant. The constant is 49 in this case. The square root of 49 is + or - 7. Therefore, you get (x+7) and (x-7) as solutions. Factored form is (x+7)(x-7).

VMariaS [17]3 years ago
6 0
(x+7) (x-7)

Because: the difference of two squares.
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