A rectangular sheet of paper is 15 3/4 cm long and 12 1/2 cm wi3.find its perimeter

46 1/3

Explanation:

12 1/2 + 12 1/2 = 25

10 2/3 + 10 2/3 = 21 1/3

25 + 21 1/3 = 46 1/3

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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