tolong bantu saya Please yg di lingkari saja.....

4.a.(p^2+3)dan(-p^2+3)
(p^2+3)+(-p^2+3)=
(p^2-p^2)+(3+3)=
0+6=
6
d.(x^2-3x+8)+(-x^2+3x)=
(x^2-x^2)+(-3x+3x)+8=
0+0+8=
8
5. a. 3(x-2) dari 6(2x+3)=
6(2x+3)-3(x-2)=
[(6)(2x)]+[(6)(3)]+[(-3)(x)]+[(-3)(2)]=
12x + 18 + (-3x) + (-6)=
12x - 3x + 18 - 6 =
9x + 2
c. y(2-y) dari y^2 - w- l
y^2 - w - l - y(2-y)=
y^2 - w - l [(-y)(2)]+[(-y)(-y)]=
y^2 - w - l -2y + y^2 =
y^2 + y^2 - w - l - 2y=
0+ w - l - 2y =
w - l - 2y
maaf bila ada kesalahan thx