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Solve 5r2 – 12 = 68.

User Nikolina
by
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2 Answers

5 votes

5r^(2) - 12 = 68

5r^(2) = 68 + 12

5r^(2) = 80

r^(2) = 80 ÷ 2

r^(2) = 16
r =
√(16)
r = 4 or -4

So r = 4 or -4
User Katayoun
by
7.6k points
2 votes
the solution to the equation is r= the square root of 56(b+2)
User Pgl
by
8.0k points

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