Answer:
a)= 5x+10
b)= 7y-6
c)= 6x-6
d)= 2x^2+8x-5
e)= 6x+9
f)= 4xy-4y^2+8y
g)= -12y^2+10y
h)= 6x+154
i)= 6x+21
h)= 2x^2+16
