2 years ago

Factor completely. 28 – 7x2

Mathematics

1 answer:

coldgirl [10]2 years ago

5 0

Answer:

7(2+x)(2-x)

Step-by-step explanation:

Both terms are perfect squares,use the difference of square formulas

a^2-b^2=(a+b)(a-b) where a=2 and b=x

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