SOLUTION: Could someone explain this please? Find the product: (7x^2-8y)(7x^2+8y)

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Question 383104: Could someone explain this please?
Find the product: (7x^2-8y)(7x^2+8y)
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Find the product: (7x^2-8y)(7x^2+8y)
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Your problem is in the for (a-b)(a+b)
That product = a^2-b^2
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Your product:
= (7x^2)^2 - (8y)^2
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= 49x^4 - 64y^2
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Cheers,
Stan H.
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