Consider a triangular prism. the triangular end has a base of 3 cm and height of 5 cm. the length of each side is 7 cm and the height of the prism (length of the rectangle) is 12 cm. what is the surface area of this triangular prism?

a)
93 cm2

b)
155 cm2

c)
219 cm2

d)
267 cm2

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.

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