(4x 3y) (2x 1y)

Question

Please solve this math problem and show work for the answer.

Answer 1

(4x+3y)(2x+y) = 8x^2 +10xy + 3y^2

or

(4x+3y)(2x-y) = 8x^ +2xy -3y^2

or

(4x-3y)(2x+y) = 8x^2 -2xy -3y^2

or

(4x-3y)(2x-y) = 8x^2 -10xy + 3y^2

all depending on what signs you use to connect the x and y terms in each factor