Is there a website which can be used for online calculations?

1728 com/quadratc

for the website you plug in the numbers associated with variables a, b, and c for the given problem and the website should generate an answer.

solving them is quite simple when you know the formula to plug it into.

for the equation: f(x)=a(x)^2 + bx + c

you are solving for variable 'x'

you then plug in the numbers that are given a, b, and c into the equation

you then will get two answers, one for which you add the numerator and one for which you subtract the numerator. typically one answer is negative and the second answer is positive.