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Triss [41]
3 years ago
15

1. Solve x2 - 81 = 0.

Mathematics
1 answer:
zysi [14]3 years ago
3 0

Answer:

x = -9, 9.

Step-by-step explanation:

x^2 - 81 = 0

x^2 = 81

x = -9, 9.

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