PLEASE HELP FAST
80 + 10x = 0 + 20x
Show work, please!!!

x=8

Step-by-step explanation:

80 + 10x = 20x

        -10x   -10x

subtract 10 x from both sides (always do to both sides)

80=10x

divide both sides by 10

80/10 = 8

10x/10 = x

x=8

step-by-step explanation:

x^2 -12x + 36 + y^2 = 36

x^2 + y^2 = 12x

r^2 = 12rcos(theta)

r = 12 cos(theta)

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.