Tolong jawab ya please

A. (3x^3+8x^2-2x+4)+(6x^2+4x+4)
3x^3+(8x^2+6x^2)-2x+4x+4+4
3x^3+14x^2+4x+8
b. 4a-3b-5a+2b
4a-5a-3b+2b= -a-b
c. 2x+3(y-x)
2x+3y-3x= -x+3y
d. 3p-5(-p+k)
3p+5p-5k= 8p-5k

semoga membantu