x=(x^2-9)/4

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Solution for x=(x^2-9)/4 equation: 


x in (-oo:+oo)

x = (x^2-9)/4 // - (x^2-9)/4

x-((x^2-9)/4) = 0

(-1*(x^2-9))/4+x = 0

(-1*(x^2-9))/4+(4*x)/4 = 0

4*x-1*(x^2-9) = 0

4*x-x^2+9 = 0

4*x-x^2+9 = 0

4*x-x^2+9 = 0

DELTA = 4^2-(-1*4*9)

DELTA = 52

DELTA > 0

x = (52^(1/2)-4)/(-1*2) or x = (-52^(1/2)-4)/(-1*2)

x = (2*13^(1/2)-4)/(-2) or x = (-2*13^(1/2)-4)/(-2)

(x-((2*13^(1/2)-4)/(-2)))*(x-((-2*13^(1/2)-4)/(-2))) = 0

((x-((2*13^(1/2)-4)/(-2)))*(x-((-2*13^(1/2)-4)/(-2))))/4 = 0

((x-((2*13^(1/2)-4)/(-2)))*(x-((-2*13^(1/2)-4)/(-2))))/4 = 0 // * 4

(x-((2*13^(1/2)-4)/(-2)))*(x-((-2*13^(1/2)-4)/(-2))) = 0

( x-((-2*13^(1/2)-4)/(-2)) )

x-((-2*13^(1/2)-4)/(-2)) = 0 // + (-2*13^(1/2)-4)/(-2)

x = (-2*13^(1/2)-4)/(-2)

( x-((2*13^(1/2)-4)/(-2)) )

x-((2*13^(1/2)-4)/(-2)) = 0 // + (2*13^(1/2)-4)/(-2)

x = (2*13^(1/2)-4)/(-2)

x in { (-2*13^(1/2)-4)/(-2), (2*13^(1/2)-4)/(-2) }

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