5*Please answer this correctly very urgent!

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Samantha is growing a garden in her back yard. she spend $90 setting up the garden bed and buying the proper garden supplies. in addition, each seed she plants cost $0.25. a. write the function f(x) that represents samantha's total cost on her garden. b. explain what x represents. c. explain what f(x) represents. d. if samantha plants 55 seeds, how much did she spend in total?

Find the condition that the zeros of the polynomial f(x) = x^3+3px^2+3px+r may be in a.p.