Evaluate the expression 3.14(a2 + ab) when a = 4 and b = 2. (input decimals only, such as 12.71, as the answer.)

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y