The square of a binomial expands as follows:

Expanding all the binomials, we have

Sum like terms:

Simplify terms appearing on both sides:

Move all terms involving k to the left and all numbers to the right:

Divide both sides by -20:

Answer:
- is the answers for the question
Step-by-step explanation:
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Answer:
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Step-by-step explanation:
The answer is D
Step-by-step explanation:
(a+b)(ab)

8*8 - 4*4*pi*(1/2) = 64 - 8*pi