Factor the following polynomial completely: 5x^4+20x^3-105x^2
a.) 5x^3(x+3)(x-7)
b.) 5x^2(x-3)(x+7)
c.) 5x^2(x+3)(x-7)
d.) 5x^3(x-3)(x+7)

Me find the value of x each figure.

How do i multiply two digit numbers

Aweekly newspaper charges $72 for each inch in length and one column width. what is the cost of an ad that runs 2 column inches long and 2 columns wide? its not 288