Find the value of x. Then find the angle measure of the polygon.
PLEASE HELPP ME

Step-by-step explanation:

x+ x-5 + 65 = 180

2x + 60 = 180

Subtract 60

2x = 180-60 = 120

Divide by 2,

x = 120/2 = 60°

x-5 = 60-5 = 55°

the answer is c

hope this !

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.