Don't go berserk, in two days you'll have the chance to let off steam in our 11-day holiday!
Meanwhile, you can check the solutions of those exercises here!
Notice that for the first two exercises, there are infinite possibilities ;) I'm sorry there was a mistake in the second one... hehehe... it should've been x=-2 and not x=2.
See you tomorrow!!!!
This song sound like holidays, doesn't it?