What is the answer to
4 + 7 1/2 ?

11 1/2

Step-by-step explanation:

4 + 7 1/2

Turn into improper fractions

4/1 + 15/2

Turn into like fractions

8/2 + 15/2

Add

23/2

Simplify

11 1/2

Answer

The answer would be 11.5(in decimal form) 11 1/2(in fractional form)

Step-by-step explanation:

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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.