Asquare rests inside a regular octagon. each shape has a side length measuring 9 inches. find the area of the shaded region, rounded to the nearest square inch. a. 310 in2 b. 162 ft2 c. 391 in2 d. 229 in2

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.