1.(x-4)^2+8
2.(b-9)^2-81
3.(-7-m)^2
4.(-c-9)^2
5.16-8z+z^2

1)(x-4)^2+8=x^2-8x+16+8=x^2-8x+242)(b-9)^2-81=b^2-18b+81-81=b^2-18b=b(b-18)3)(-7-m)^2=49-14m+m^24)(-c-9)^2=c^2-18c+815)16-8z+z^2=(4-z)^2