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2 answers:
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Answer:
Proved
Step-by-step explanation:
Given
Required
Prove that is a multiple of 20
First, we need to evaluate
Start by applying difference of two squares
Substitute values for A and B
Collect Like Terms
Since, N is a multiple of 5, then the possible values of N are:
For each of these values, the possible values of are
The above shows that is a multiple of 20