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German Sharp
Mathematics
13 February, 01:59
Find x if (117 + x) (V17 - x) = 12.
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Octavio Bradford
13 February, 02:06
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Answer: x = ±√145
Step-by-step explanation:
√ (17 + x) * √ (17 - x) = 12
√ (17 + x) (17 - x) = 12
Squaring both sides,
(√ (17 + x) (17 - x)) ^2 = 12^2
(17 + x) (17 - x) = 144
17 (17 - x) + x (17 - x) = 144
289 - 17x + 17x - x^2 = 144
x^2 = 289 - 144
x^2 = 145
x = ±√145
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