The measure of each side of a square paper is (a-2) units. Find the area of the paper.
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Answer:
Area = Side × Side
Therefore area of square is (a-2)×(a-2)
(a-2)² = a² + 4 - 2(a)(2)
= a² + 4 - 4a
Therefore Area of square is :-
a² - 4a + 4
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