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Explain why (y-7)² ≠ y² - 49

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Explain why (y-7)² ≠ y² - 49

asked Sep 26, 2024 233k views

1 vote

Explain why (y-7)² ≠ y² - 49

Mathematics
high-school

by Heath

8.3k points

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1 Answer

3 votes

Answer:

See below

Explanation:

(y-7)^2=(y-7)(y-7)=y^2-14y+49

Now
(y-7)(y+7)=y^2-49 , but the middle term is cancelled out.

Nerjuz answered Oct 2, 2024

by Nerjuz

8.0k points

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