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0=-x2+15x-100
We move all terms to the left:
0-(-x2+15x-100)=0
We add all the numbers together, and all the variables
-(-1x^2+15x-100)+0=0
We add all the numbers together, and all the variables
-(-1x^2+15x-100)=0
We get rid of parentheses
1x^2-15x+100=0
We add all the numbers together, and all the variables
x^2-15x+100=0
a = 1; b = -15; c = +100;
Δ = b2-4ac
Δ = -152-4·1·100
Δ = -175
Delta is less than zero, so there is no solution for the equation
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