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Mathematics
Chana Willis
12 August, 10:38
Which are the solutions of x^2 = 19x+1?
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Danny Collier
12 August, 14:38
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X^2=19x+1
x^2-19x-1=0
- (-19) + (19^2-4 (1) (-1)) ^ (1/2)) / (2*1)
(19 + (361+4) ^ (1/2)) / (2)
= (19 + (365^ (1/2)) / 2
= (19 - (365^ (1/2)) / 2
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