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What are the solutions to m2 - 9 = 0?

O m = -9 and m = 0
m = -3 and m = 3
оооо
m = -3
O m = 9

User Aaron Bell
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4.6k points

2 Answers

3 votes

Answer:

b is correct

Explanation:

User Naoto
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4.5k points
3 votes

Answer:

m = -3 and m = 3

Explanation:


{m}^(2) - 9 = 0 \\ \\ {m}^(2) - {3}^(2) = 0 \\ \\ (m + 3)(m - 3) = 0 \\ \\ m + 3 = 0 \: \: or \: \: m - 3 = 0 \\ \\ m = - 3 \: \: or \: \: m = 3 \\ \\ m = - 3, \: \: 3

User Redberry
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