x2+15/7x-18/7=0

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Solution for x2+15/7x-18/7=0 equation: 


x in (-oo:+oo)

x^2+(15/7)*x-(18/7) = 0

x^2+(15/7)*x-18/7 = 0

x^2+15/7*x-18/7 = 0

DELTA = (15/7)^2-(-18/7*1*4)

DELTA = 729/49

DELTA > 0

x = ((729/49)^(1/2)-15/7)/(1*2) or x = (-(729/49)^(1/2)-15/7)/(1*2)

x = 6/7 or x = -3

x in { -3, 6/7 }

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