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

Question

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

Answer 1

1)(x-4)^2+8=x^2-8x+16+8=x^2-8x+24
2)(b-9)^2-81=b^2-18b+81-81=b^2-18b=b(b-18)
3)(-7-m)^2=49-14m+m^2
4)(-c-9)^2=c^2-18c+81
5)16-8z+z^2=(4-z)^2