Can someone help me on 5,11,14,15,16?

5. -6x(x-(-2))= pemdas, -6x(x+2), distribute, -6x^2-12x
11. 7xy
14 count how many x's there are and add so 6+7+1=14 so 14x
15. combine tems with exponets with exponents so 8x^2+8x
16.count how many y's ther are and add so 1+1+2+1=5 or 5y

There are two bc a studen that equals to 2