Using a2 – b2 = (a + b) (a – b), find(i) 71 sq – 69sq – InterviewSolution

1.

Using a2 – b2 = (a + b) (a – b), find(i) 71 sq – 69sq

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Answer:

hope it helps you dear

Step-by-step explanation:

(71 - 69)(71 + 69) => (2)(140) => 280 THEREFORE 280 is the DIFFERENCE between 71sq - 69 sq

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