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Which shows 532 − 472 being evaluated using the difference of squares method? 532 − 472 = 2809 − 2209 = 600 532 − 472 = (53 + 47)(53 − 47) = (100)(6) = 600 532 − 472 = (53 − 47)2 = 62 = 36 532 − 472 = (2809 + 2209)(2809 − 2209) = 3,010,800

User Jonsca
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2 Answers

5 votes
I guess you mean 53^2 - 47^2
Its best to use the '^' symbol to avoid confusion.

the second choice is the correct one.
User Bartolinio
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7.8k points
2 votes

For this case we have that by definition, the difference of squares is given by:


a ^ 2 - b ^ 2 = (a + b) (a-b)

We then have the following expression:


53 ^ 2 - 47 ^ 2

According to the definition, we rewrite as:


53 ^ 2 - 47 ^ 2 = (53 + 47) (53-47)

Then, rewriting we have:


53 ^ 2 - 47 ^ 2 = (100) (6)\\53 ^ 2 - 47 ^ 2 = 600

Answer:

Option B


53 ^ 2 - 47 ^ 2 = (53 + 47) (53-47) = (100) (6) = 600


User Thomas Wikman
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8.6k points