15-x^2/8=-1

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Solution for 15-x^2/8=-1 equation: 


x in (-oo:+oo)

15-((x^2)/8) = -1 // + 1

1-((x^2)/8)+15 = 0

-1/8*x^2 = -16 // : -1/8

x^2 = 128

x^2 = 128 // ^ 1/2

abs(x) = 8*2^(1/2)

x = 8*2^(1/2) or x = -(8*2^(1/2))

x in { 8*2^(1/2), -(8*2^(1/2)) }

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