I need help understanding this please :)

-5.88, -51/9, -√30, 5.68

Lets start with the negative square root of 30. That is about 5.48. Then we have 5.68, and -5.88. Those are pretty straight forward. -51/9 in decimal form is -5.67. When we put those on a number line from least to greatest, we get -5.88, -51/9 (-5.67), -√30 (5.48), and 5.68. If this helps, please consider a brainliest! <3

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.