wendymendez wendymendez

07-11-2016
Mathematics

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solve the equation 10a^2-10=630 by taking square root

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Аноним Аноним

07-11-2016

10a^2-10 = 630
10(a^2 - 1) = 630
(a^2 - 1) = 630/10
a^2 - 1 = 63
a^2 = 63 + 1
a^2 = 64
a = +- 8

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