170=x(x-3)/2

Solution for 170=x(x-3)/2 equation:

170=x(x-3)/2

We move all terms to the left:

170-(x(x-3)/2)=0

We multiply all the terms by the denominator


-(x(x-3)+170*2)=0


We calculate terms in parentheses: -(x(x-3)+170*2), so:

x(x-3)+170*2

We add all the numbers together, and all the variables

x(x-3)+340

We multiply parentheses

x^2-3x+340

Back to the equation:

-(x^2-3x+340)


We get rid of parentheses

-x^2+3x-340=0

We add all the numbers together, and all the variables

-1x^2+3x-340=0

a = -1; b = 3; c = -340;
Δ = b2-4ac
Δ = 32-4·(-1)·(-340)
Δ = -1351
Delta is less than zero, so there is no solution for the equation