Question

You have a truck with two gas tanks. The volume of the larger tank is "8x2 + 2x − 1" in3 and the volume of the smaller tank is "7x2 − 2x + 1" in3. Find a single expression that represents the capacity of both gas tanks combined

Answer 1

tank1+tank2=8x^2+2x-1+7x^2-2x+1

Total=15x^2