What is the surface area of the outside of a cube shaped closed-top water tank whose edge length is 7.2 ft? a.373.25 b.311.04 c.259.2 d.43.2

triangle abc is reflected on the line x=-6.5 then reflected again on the x axis

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.