Which description can be written as the expression StartFraction 8 Over 21 n EndFraction?
the quotient of twenty-one times a number and eight
the product of eight and twenty-one times a number
the quotient of eight and twenty-one times a number
the product of twenty-one times a number and eight

C

Step-by-step explanation:

quotient-division

product-multiplication

(then the answer is multiplied by n not 8n)

BRAINLIEST LOL :)

25

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.