19-05-2018
Mathematics

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Simplify (2√5 + 3√7)² Show ALL your work.

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19-05-2018

a = 2√5 , b = 3√7

(a+b)² = a² + 2ab + b² = (2√5)² + 2(2√5)(3√7) + (3√7)²
= 4*5 + 12√35 + 9*7
= 83 + 12√35

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