3 years ago

Find the product. (7 q - 5)(7 q + 5) 49q^2 - 10q - 25 49q^2 + 10q - 25 49q^2 - 25

Mathematics

1 answer:

elena55 [62]3 years ago

8 0

$Use\ (a-b)(a+b)=a^2-b^2.\\\\(7q-5)(7q+5)=(7q)^2-5^2=\boxed{49q^2-25}$

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