What do you do when you have a quadratic equation such as x^2=2x-5, and there is no c value? Should you leave c as zero? one? Or just omit c entirely?

Answer 1

The equation you wrote can be rewritten in the standard form
x^2 -2x +5 = 0
The value of "c" in this case is +5

Answer 2

What would be be then?

Answer 3

I meant what would "b" be then? Whoops

Answer 4

b = -2, the coefficient of the "x" term