Which term in this expression is a constant? 6a + a + 3b + 18

In this expression 18 is constant

Step-by-step explanation:

In this expression

6a + a + 3b + 18

18 is constant

According to definition of constant in algebra

In Algebra, a constant is a number on its own,

Example: in "x + 5 = 9", 5 and 9 are constants.

So

From the def of constant it is clear that in this expression 6a + a + 3b + 18

18 is constant

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.