Sasha, the carpenter, wants to make sure that a wall and the floor form a right angle. Sasha measures 4 feet up the wall from the floor and makes a mark on the wall. Then, she measure 5 feet out on the floor and makes a mark. If the distance, on the diagonal, between the two marks Sasha made is 6.25 feet, then did she make a right triangle? If not, what type of triangle did she make?

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.

answer: 24

step-by-step explanation: you have to make a list of each of the orders