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01-03-2018
Mathematics

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If a+b=5 and a-b=3 find the value of a^2-b^2

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01-03-2018

A = 4. B = 1. The b’s cancel each other out. Then you have 2a = 8. Divide 8 by 2 and get 4. That’s a=4. Then put a back into either problem. So 4+_=5. B=1. 16-1=15. 15 is the answer

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