What is the solution for 9- 10x = 2x + 1 - 8x
A. X= -1/2
B. X= -2
C. X= 1/2
D. X= 2

D.

Step-by-step explanation:

9 - 10x = 2x + 1 - 8x

9 - 10x = -6x + 1

9 = 4x + 1

8 = 4x

2 = x

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.

stop cheating

step-by-step explanation: