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Lerok [7]
3 years ago
14

Slove this question c^2-81=0

Mathematics
1 answer:
Firdavs [7]3 years ago
3 0
To solve a square root, get the ^2 on one side and the 81 on the other side.
add 81 to both sides.

c^2 = 81
to clear the power of 2, take the square root of both sides.
c = + - sqrt81
c = + - 9
c = 9 and c = -9
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3 years ago
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