General maths knowledge on quadratics
Where is the discriminant found?
What is the notation?
Under the square root in the quadratic formula.
Delta - Triangle
Factor the following quadratics completely:
x2-9x+14=0
(x-7)(x-2)
Solve the following by expanding (x+2)(x+3)
x2+5x+6
Solve the following quadratic using the quadratic formula:
x2+5x+1=0
x=(-5+-sqrt21)/2
What country is currently ranked no.1 for men's and women's volleyball?
Poland - M.
Italy - W.
What are the two methods for solving simulatneous equations?
Subtitution method.
Elimination method.
Factor the following quadratics completely:
x2+7x-8
(x+8)(x-1)
Solve the following by expanding (3-x)(2-x)
x2-5x+6
Solve the following quadratic using the quadratic formula:
3x2-4x-1=0
x=(4+-sqrt28)/6 or x=(2+-sqrt7)/3
How many cards are in a standard deck (exc. the Jokers).
52
How do I know if two lines are parallel or perpendicular?
Parallel gradients are equal.
Perpentidular gradients equal -1 when multiplied together.
Factor the following quadratics completely:
2x2+3x-20
(2x-5)(x+4)
Solve the following by expanding (2x+2)(x-3)
x2-4x-6
Solve the following quadratic using the quadratic formula:
7x2-9=4x
x=(4+-sqrt268)/14 or x=(2+-sqrt67)/7
What is QLD's longest winning streak in the State of Origin?
2006 - 2013, 8 years.
What is the formula to find the turning point?
x=-b/2a
Factor the following quadratics completely:
5x2-9x+4
(5x-4)(x-1)
Solve the following by expanding (3-2x)(2-x)
2x2-7x+6
Solve the following quadratic using the quadratic formula:
2x2-15=0
x=+-(sqrt60)/2 or x=+-(sqrt15)
Only two mammals (Monotreme) on Earth lay eggs. Both are found in Australia. What are they?
Platypus and Echinda (4 species).
When would I cross multiply?
Write an example and solve.
When there is an equals sign between two fractions.
Factor the following quadratics completely:
30x2+18x-84
6(5x-7)(x+2)
Solve the following by expanding (x+1)(x+2)(x+3)
x3+6x2+11x+6
Solve the following quadratic using the quadratic formula:
4x2-18=10x
x=(5+-sqrt97)/4
What was Ada Lovelace known for in the world of mathematics?
Considered the first computer programer.