Q1a (2x - 3)(x - 1)
(x - 2)(x + 1) doesnt exist
b probably multiply by conjugate t+1 then try subbing in 1
c 64 = 4^3 figure out the (4+h)^3 and see if you can cancel the h on the bottom
Q2 move e^x over to right sketch x=-1 x=0 and x=1 you will see its crosses the x axis at only one point hence one root.
the rest seem to be basic differentiation of a function and finding points
Sketching graphs and checking if functions are continuous just sketch each part out Q5 x^2 - 1 is a U shaped function one unit right on the origin but be careful only to sketch the portion where x < 0 as stated . do this for the others and check result.