Atriangular parking lot has two sides that are the same length and the third side is 5 m longer. if the perimeter is 71 m, find the lengths of the sides.

22m, 22m, 27m

Step-by-step explanation:

The three sides can be noted as: x, x, and x + 5

x + x + x + 5= 71

3x + 5 = 71

3x = 66

x = 22

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.