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Nonamiya [84]
4 years ago
6

Which polynomial identity will prove that 49-4=45

Mathematics
1 answer:
goldfiish [28.3K]4 years ago
3 0
Consider the polynomial identity (difference of squares):
(x+y)(x-y) = x² - y²

Set x =7 and y = 2 to obtain
(7+2)*(7-2) = 7² - 2²
9*5 = 49 - 4
45 = 49 - 4
This is the result required, obtained by using difference of squares.

Answer: Difference of squares.
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A family buys 3 dinners at $9 each, 2 kids meals at $4 each, and 4 desserts at $3 each. After using a $10 off coupon, how much d
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3 years ago
Are 2 by 5 and 4 by 10 equivalent fraction ???​
Zinaida [17]
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Answer:

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