Asked by Emma

Which special case is represented by x^2-121?

A.
the difference of two squares
B.
the difference of cubes
C.
the square of a binomial
D.
the sum of cubes
Answered by Alyanna
C..i think?
Answered by Reiny
really ?

isn't x^2 a perfect square?
isn't 121 a perfect square ? ---- 11^2 = 121

Don't we subtract (-) to take the difference between 2 numbers?

Now what do you think??
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