An easy one, but still...
The problem is expanding (((2+h)^2)-4)/h
first off do I need all those brackets to be clear when it's written on one line? :)
How do you get to the answer of 4h+(h^2)/h? I don't get that...
Could you explain where I'm going wrong?
for the expansion, you need to first square (2+h) which is just h^2 + 4h + 4 (if you need more explanation for this please reply and say so), then you are subtracting 4 so you are left with h^2 + 4h.
Originally Posted by newbie2008
you can still make this answer simpler if you want by dividing it:
you are dividing by h and so 4h/h is just 4, and h^2/h is just h, so your final answer is h + 4