X^4 because it has 4 zeroes ( the graph crosses the x axis 4 times
Questions:
(a) What is a simplified expression for (x + y) – (x – y)?
(b) Carlotta thinks that
is the same as
. Which statement shows that it is NOT the same?
Answer:


Step-by-step explanation:
Solving (a):
Given

Required
Simplify

Open brackets

Collect Like Terms



Solving (b):
Given
and 
Required
Which expression shows they are not the same
The expression that shows this is:

Take for instance; y=2
Substitute 2 for y in 

Evaluate all exponents



The above expression supports 
By using green to find the pink locate all the ponies
Answer:
To plot (4,2) start at the origin (0,0) and move right 4 units and up 2 units (4,2)