SOLUTION: If y=ax^2+bx+c,make x the subject of the formula, i.e. express x in terms of a, b, c and y.

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Question 983833: If y=ax^2+bx+c,make x the subject of the formula, i.e. express x in terms of a, b, c and y.
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
y = ax^2 + bx + c
ax^2 + bx + c-y = 0
now use the quadratic formula
x = (-b + or - square root(b^2 - 4 * a * (c - y))) / 2a