Do you know what you need to do to solve this problem?
One polynomial identity that crops up often in various areas is the difference of squares identity:
A2-b2=(a-b) (a+b)
We meet this in the context of rationalising denominators.
The answer is -0.083333333333333
63 5 tens=50
13 ones=10 and 3 leftover 50+13=63
The answer is $116.18. 135 is 116.2% of the previous year.
