Answer:
A
Step-by-step explanation:
The formula for the perimeter is 2l +2w. 4x^2+4x^2=8x^2. y^2+y^2=2y^2.
If we add them together the answer is 8x^2+2y^2.
5/6 - 5/9 = 5/18 ≅ 0.2777778.
multiplication is usual multiplication one constant times another, convolution is polynomial multiplication which is multiplying 2 polynomials.
450