Question

Which is a function equivalent to f(n)=(n+2)^2+n^2-4 ? SHOW WORK & EXPLAIN
A. f(n)=(n+3)(n+1)-n(n+1)
B. f(n)=n^2+2n+2
C. f(n)=(n-1)(n+1)-3
D. f(n)=n(2n+4)

Answer 1

You need to simplify the expression. It is equal to the last one
You can see the step-by-step solution at Calorful: http://goo.gl/RSyCH8
You can use this free calculator to solve algebra questions. You can use it to save time from asking.