GIVE ME AN ACTUAL ANSWER PLZZ WILL MARK BRAINLEST Henry is using a total of 40 ft. of lumber to make a bookcase. The left and right sides of the bookcase are each 8 ft. high. The top, bottom, and two shelves are all the same length, labeled .
Part A: Construct an equation to model the situation. (5 points)

Part B: Solve the equation. Show all your steps.
(5 points)

Part C: Use the solution to answer the question in a complete sentence. (5 points)

sorry i cant help i need points

Step-by-step explanation:

it could be a ..idk tho

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.