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Julli [10]
4 years ago
12

Solve this equation using an algebraic method: (x + 4)( x - 4) = 9

Mathematics
1 answer:
ANEK [815]4 years ago
3 0
(x + 4)(x - 4) = 9
x^2 - 16 = 9
x^2 = 9 + 16
x^2 = 25
x = sqrt 25
x = 5
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