Question

Which of the following statements must be true of an equation before you can use the quadratic formula to find the solutions?

A. The coefficient of x2 -term can't be 0.
B. The coefficient of the x- term must be positive.
C. One side of the equation must be 0.
D. There can be no term whose degree is higher than 2

Answer 1

for \(ax^2+bx+c\) we have \(x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\). So starting with the first option do you see any problem with \(a=0\)

Answer 2

?