What is the expanded form of 8,609? A 8,000+600+ 90
8,000+60+9
8,000 +900+ 6
8,000+600 +9

The last one 8,000 + 600 + 9

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.

20%

step-by-step explanation: