2*(72*x + 1)^2 - 1
2*(72*x + 1)^2 + 1
2*(36*n + 1)^2 + 1
5(-4)
3+7+11+...+(4n-1)=n(2n+1)
31 1/4 of 64 is 20.32
10368*n^2 + 288*n + 1
factorize
Find tan θ in fractional form if sin θ = 2/3
f(x) = Sen(x) -3
