Originally Posted by

**mode** I am brushing up on some math for an upcoming assessment test i have to take for post secondary. These questions are some that my teacher gave me, when i asked him what to expect for the assessment test (btw the last 2 are fractions, tried my best to make them look the part)

1. simplify (wasnt to sure where to go with this so i did what i knew)

= y-4[y-3(y-2)]5

= y - 20[y-3(y-2)]

= y - 20[y-3y+6]

= y - 20[-2y+6]

= y + 40y - 120

= 41y - 120

2.

___1___

__1__+__1__

a b

I think this is supposed to end up looking like this (im not sure of the process to get it however)

__a+b__

ab

multiply numerator and denominator by ab ... you should get ab/(b+a)

3.Not sure how to do this one at all

__ ___a____

a+a^2

a/[a(1+a)] = 1/(1+a)