Question
Calculate the difference between (7.225) 2Â -
(2.275) 2 Â Â ÂSolution
We know that; (a2Â - b2) = (a + b) X (a - b) So, (7.225 + 2.275) X (7.225 - 2.275) = (9.5) X 4.95 = 47.025
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