Topic 2 0.0 / 5 ? MathematicsQuadraticsASEdexcel Created by: Jemma1494Created on: 02-06-21 14:52 Quadratic formula (-b±√(b²-4ac))/(2a) 1 of 9 Completing the square For x^2 + bx + c = 0 (x + b/2)^2 -(b/2)^2 + c = 0 = (x + p)^2 + q = 0 2 of 9 What do the coefficients of a completed square show Turning point = (-p,q) 3 of 9 Positive quadratic graph u shape 4 of 9 Negative quadratic graph n shape 5 of 9 Roots of a quadratic (x-2)(2x+5) Roots = (2,0) and (-2/5,0) 6 of 9 Y intercept of quadratic graph ax^2 + bx + c = 0 Y intercept = (0,c) 7 of 9 Discriminant b^2 - 4ac 8 of 9 Rules for discriminant If b^2 -4ac > 0 then graph has two roots If b^2 - 4ac = 0 then graph has one repeating root If b^2 - 4ac < 0 then graph has no roots 9 of 9
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