Factor find the zeros

Question

x^5-9x^3

Find the quotient and remainder using long division

(x^3-x^2-2x+6)/(x-2)

Use sythetic division and remainder therem to evalulate P(c)

Let P(x)= 6x^7-40x^6+16x^5-200x^4-60x^3-69x^2+13x-…

*Calculate P(7) by (a) using synthetic division and (b) substituting x+7 into to polynomial and evalulating directly

Answer 1

I'll do the first one:
x^5-9x^3
=x³(x²-9)
=x³(x+3)(x-3)

Please give the rest a try and show your work or your attempts.