8.3+7.2b-3.6b =???

If anyone can just find the answer to this real quick

if you are simplify its 3.6b+8.3

Step-by-step explanation:

8.3+(7.2b-3.6b) : Group like terms together

8.3+3.6b : Combine each group

3.6b+8.3 : Rearrange the expression

1/4 and 8/3 because:

the reciprocal if 4 is 1/4 because 4 is used as 4/1 and the opposite of that is 1/4. the opposite of 3/8 is 8/3 so that is the answer.

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.