A rice farmer uses a rotating irrigation system in which 8 sections of 165 foot pipe are connected end to end. The resulting length of sprinkler pipe travels in a circle around a well, which is located in the center of the circle. How many acres of the square field are irrigated? (One acre is 43,560 ft2)

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step-by-step explanation:

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.