math help? PLEASE!!!?

ok, so this is my math homework, and no, im not obliged to hand it in...but i want to be able to understand/ see if im doing these right...

Theres a lot of questions... but whoever gets the most right, and responds to this the quickest gets full points!!!

Here they are...

Evaluate or simplify the expressions.

(35)2(16)-4

(40w2)-5

x5y-8x5y-6

12a-3b921a2b-4

7x-3x3+(16-8x3+5x2-x)

n+5(2n2-n-7)

(3c-2)3

Evaluate the polynomial function.

gx=7x-x4+1; x=(-4)

fx=13x5+3x3-7x2+12x+4;x=6

Describe the end behavior for the polynomial function.

fx=x7-4x+12x5-10

hx=-5x4+3x2-12

Factor completely or solve the polynomial function

27q3+343

25p3-25p2-p+1

c4-625=0

6x6-5x3-4

6w3+30w2-18w-90=0

Find all the zeros of the polynomial function.

fx=2x2-5x-42

gx=2x4+x3+x2+x-1

hx=8x3-6x2-23x+6

Write a polynomial function of the least degree, from the givens and the leading coefficient is 1.

x=1, 2, 5

x=-5, 0, 2i

x={8, 2+i}

Identify the x-intercepts and points where local maximums and minimums occur.

fx=3x3-9x+1

gx=x4-2x3-3x2+5x+2