Solve for x
9(x+1)=25+x

x = 2

Step-by-step explanation:

9(x+1) = 25+x

Distribute

9x +9 = 25+x

Subtract x from each side

9x-x +9 = 25+x-x

8x +9 = 25

Subtract 9 from each side

8x+9-9 = 25-9

8x = 16

Divide each side by 8

8x/8 = 16/8

x = 2

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.