Factoring Trinomials
3x2 + 10x + 8
(3x+4)(x+2)
Find the vertex for f(x) = x2-4x + 3.
What is (2,-1)?
Find the roots of x2 -25.
What are -5 and 5?
Solve by completing the square. x2 - 6x = 40
What are -4 and 10?
TRIPLE POINT BONUS !!!
What is the cross between a donkey and a zebra known as?
A zonkey. However, the names "zebonkey," "zebrula," "zebrass," and "zedonk" are more commonly accepted.
DOUBLE POINT BONUS: Factorise 5x2 + 21x + 4
(5x+1)(x+4)
A fraction in front of the x in a sin(x) or cos(x) equation will make the graph do what ?
Elongate, expand or spread it out
Find the roots of x2 + 10x + 25.
What is -5?
Solve by completing the square. x2 + 18x = 15
What are -9 +- 4\/6?
TRIPLE POINT BONUS ! What is a group of frogs known as?
An Army.
Factorise 4x2 + 11x + 7
(4x+7)(x+1)
The cos(x) graph is "what" in relation to the sin(x) graph ?
Negative (shoft to left ) of 90o or π/2
Find the roots of x2 + 5x =24
What are -8 and 3?
Solve by completing the square: 3x2 - 24x = 27
What are -1 and 9
How many times can you subtract 10 from 100?
Once. Next time you would be subtracting 10 from 90.
Factorise 9x2 - 3x -2
(3x+1)(3x-2)
What is the first x-intercept of f(x)=cos(5x)
pi/10 or π/10
DAILY DOUBLE POINT BONUS: Find the roots of 9x2 = 25.
What - 5/3 and 5/3?
Solve by completing the square. x2 = 27 - 6x
What are 3 and -9?
There was an airplane crash, where every single person on board died, but yet two people survived. How is this possible?
The two were married!
The area of a rectangle is 20x2-27x-8. The length is 4x+1. What is the width?
5x-8
Determine the amplitude and period of y = -3 sin (2/3 x)
Amplitude=3
Period=3 pi or 540o
Find the roots of 2x2 + 18 x + 28.
What are -7 and -2?
DOUBLE POINT BONUS !
Convert from standard to vertex form by completing the square y = x2+4x-3
(x+2)2-7
When is the A-League Grand Final kicking off this Saturday night ??
7:50pm