Factor the following polynomial completely.

5x ^3+ 2x^2 – 45x –18

(5x+2)(x-3)(x+3)

Step-by-step explanation:

factor x²

5x ³+ 2x² – 45x –18

x²(5x+2)-45x-18

factor 5x+2

(5x+2)(x²-9)

factor using the method of a²-b²=(a-b)(a+b)

(5x+2)(x-3)(x+3)

518,400

step-by-step explanation:

the area is multiplying all the given measurements together.

40 * 18 * 30 * 24 = 518,400

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation: