formulas/rules for quadratics
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igcse maths edexcel
Last updated 11:38 AM on 5/15/25
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5 Terms
1
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quadratic formula
x = -b ± √b2 - (4ac) /2a
2
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binomial square formula
(a + b)2 = a2 + 2ab + b2
3
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completing the square
x2 + bx = (x + bx/2x)2 - (bx/2x)2
4
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discriminant rules quadratic formula
if b2 - 4ac > 0, there are 2 real solutions, if it = 0 there is 1 real solution, if it is <0 there are no real solutions
5
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What do you do when multiplying or dividing by a negative in inequalities?
FLIP THE SIGN
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Flashcards (78)