Pls help! what is the radius of this circle?
1 answer:
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Given expression: (A+b)^3.
We can expand it into three factors as (A+b)(A+b)(A+b).
First we would foil (A+b)(A+b) =
Combining like terms, we get
=
Now, we would multiply (A^2 +2Ab + b^2) and (A+b).
=
Combining like terms, we get
Therefore,