Card 1 of 20
Why must a≠0a\neq 0a=0 in ax2+bx+c=0ax^2+bx+c=0ax2+bx+c=0?
A
If a=0a=0a=0, the equation is linear, not quadratic.
B
(−3,−7)(-3,-7)(−3,−7).
C
For ax2+bx+c=0ax^2+bx+c=0ax2+bx+c=0, the discriminant is Δ=b2−4ac\boxed{\Delta=b^2-4ac}Δ=b2−4ac.
D
x=2±5x=2\pm\sqrt5x=2±5.
Card 1 of 20
1.2.4 Solve quadratic equations Flashcards
20 flashcards on OCR (MEI) A Level Maths 1.2.4 Solve quadratic equations: the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.