Apentagon has 3 congruent sides and 2 other congruent sides. the perimeter of the pentagon is 36 centimeters. the three long congruent sides are 2 centimeters longer than the two shorter congruent sides. let x = length of a short side let y = length of a long side the system of equations can be used to represent the situation. y = x + 22 x + 3y = 36 what is the length of one of the shorter congruent sides? a. 2 centimeters b. 6 centimeters c. 8 centimeters d. 17 centimeters

d is correct

step-by-step explanation:

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.