Roodsravirgirl Roodsravirgirl

12-11-2016
Mathematics

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Given (x – 7)2 = 36, whats the values of x

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12-11-2016

x = 25
(x – 7)2 = 36
(x2) - (72) = 36 : multiply x2 and 72 because of distributive property
2x - 14 = 36 : multiply
2x = 36 + 14 : add 14 to combine like terms
2x = 50 : add
x = 50/2 : divide 50 by 2 to get x alone
x = 25 : simplify

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