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A quadratic equation has standard form [ ].
A
x=32x=\frac{3}{2}x=23 or x=2x=2x=2.
B
Completing the square uses x2+bx=x^2+bx=x2+bx= (x+b2)2−(b2)2\boxed{\left(x+\frac{b}{2}\right)^2-\left(\frac{b}{2}\right)^2}(x+2b)2−(2b)2.
C
A quadratic equation has standard form ax2+bx+c=0ax^2+bx+c=0ax2+bx+c=0, where a≠0a\neq 0a=0.
D
They must add to bbb.
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1.1.6 Algebra and functions Flashcards
23 flashcards on CCEA A Level Maths 1.1.6 Algebra and functions: the key formulae, methods and definitions you need to recall for AS 1, AS 2, A2 1 and A2 2.