SOLUTION: what if there is no c factor when using the quadradic formula to solve an equation?

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Question 137426: what if there is no c factor when using the quadradic formula to solve an equation?
Answer by oscargut(2103) About Me  (Show Source):
You can put this solution on YOUR website!
if f(x)=ax^2+bx+c and c=0 you can still use the formula but is better
doig this:
ax^2+bx=x(ax+b)=0