- #1

Monoxdifly

MHB

- 284

- 0

A) x^2-2x+3=0

B) x^2+2x-3=0

C) x^2-3x+2=0

D) x^2-2x-3=0

I know that I can find the answer by substituting the known values to each options, but how to do it the proper way? We need at least three known points, right? How do we know where is the other point needed to solve this?