Find the product (expand) of the following:
A. Square of Binomials
1. (a+7)²=
2. (4x-5)²=
B. Square of trinomials
1. (x+3y+4z)²=
2. (10p+5q-3r)²=
C. Sum and difference of two binomials
1. (4t+9)² (4t-9)²=
2. (3e-4)² (3e+4)=
D. Cube of a binomial
1. (a+2b)³=
2. (2k-3l)³=
