The coefficients corresponding to k = 0, 1, 2, ..., 5 in the
expansion of (x + y)^5 are 1, 5 , 10 , 10, 5, 1. The coefficients can be solve
using manual expansion of the term of using combination:
<span>nCr-1, where n is the power and r is the desired
therm,</span>
The answer to this question is 100
X=7 because 7 squared equals 49
Length: 4x
Width: ??
Length x Width: 4x^2 + 12x
Can be rewritten as: 4x(x+3)
Therefore: ?? = x + 3