1. Evaluate the polynomial for x=3 and x=-3: the value of -6x +8 is - when x is 3, when x is -3?

Question

2. Evaluate the polynomial for x =-4 and x=4:The value of -2x^3+8x^2-5x-9 is- x is 4,x is -4.

5. Add
(8m^3-3m^2+m-5)+(8m^3+3m^2-4m-2)

6.Subtract
(5a^3+a-7)-(8-7a^3-2a^2)

&. (-1/2y^2)(3/5y^8)

Answer 1

No ideas on any of these? Glad to help, but resist freebies.