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

Solve the equation 10a^2-10=630 by taking square root
asked 133k views
2 votes
Solve the equation 10a^2-10=630 by taking square root

asked
User Digory Doo
by
8.1k points

1 Answer

5 votes
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

answered
User BilalReffas
by
8.6k points
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