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Goshia [24]
3 years ago
8

Which are the solutions of the quadratic equation? x2 = 9x + 6

Mathematics
2 answers:
Lelechka [254]3 years ago
8 0
X^2 = 9x + 6
x^2 - 9x - 6 = 0
use quadratic formula : (-b (+-) sqrt b^2 - 4ac) / (2a)
a = 1, b = -9, c = -6
now we sub

x = (-(-9) (+-) sqrt -9^2 - 4(1)(-6)) / 2(1)
x = 9 (+-) sqrt 81 + 24)/2
x = 9 (+-) sqrt 105) / 2
x = 9/2 + 1/2 sqrt 105 or x = 9/2 - 1/2 sqrt 105

mestny [16]3 years ago
4 0

Answer:

Answer is C on edg

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