Equation ax²+bx+c=0 arrange the equation x²-14x+49=0 a=1 b=-14 c=49
General Formula= b+ or - √b²-4ac/2a by substituting gives us
-14+ or - √0/2 so we have one answer because 4ac is to b2 and √0 = 0 -14/2 = -7 The answer is one solution -7. If you want and extra hint there it is: b²-4ac is called the discriminant because it shows you how many solutions the equation will have if it's positive then it's 2 solutions and if it's zero then it's one solution and if it's negative no solution because b²-4ac is under a root and if a negative number is under a square root then it's undefined.