AS-level Edexcel Pure Maths - Module 2:
Quadratics Q&A(100%)Correct
Quadratic equation - correct answers:Written as ax²+bx+c=0 where a, b, c and constants. Has 0-2
solutions
Roots - correct answers:- The solutions to an equation
- The values of x for which f(x)=0
- Find by factorising x
Completing the square - correct answers:x²+bx = (x+b÷2)²-(b÷2)²
Completing the square when a≠1 - correct answers:- Factorise as much as possible
- Otherwise keep a outside the brackets
Completing the square when a≠1 - method - correct answers:2x²-12x
= 2(x²-6x)
= 2((x-3)²-3²) Complete the square
= 2((x-3)²-9) Simplify
= 2(x-3)²-18 Multiply outside bracket by a
Domain - correct answers:The set of possible inputs of a function
Find through substitution
Range - correct answers:The set of possible outputs of a function
Find through completing the square
∈ - correct answers:Symbol meaning 'a member of'
Quadratics Q&A(100%)Correct
Quadratic equation - correct answers:Written as ax²+bx+c=0 where a, b, c and constants. Has 0-2
solutions
Roots - correct answers:- The solutions to an equation
- The values of x for which f(x)=0
- Find by factorising x
Completing the square - correct answers:x²+bx = (x+b÷2)²-(b÷2)²
Completing the square when a≠1 - correct answers:- Factorise as much as possible
- Otherwise keep a outside the brackets
Completing the square when a≠1 - method - correct answers:2x²-12x
= 2(x²-6x)
= 2((x-3)²-3²) Complete the square
= 2((x-3)²-9) Simplify
= 2(x-3)²-18 Multiply outside bracket by a
Domain - correct answers:The set of possible inputs of a function
Find through substitution
Range - correct answers:The set of possible outputs of a function
Find through completing the square
∈ - correct answers:Symbol meaning 'a member of'
