85< 17m < 136 compound inequality

5<m<8

Step-by-step explanation:

Isolate the variable by itself.

It is being multiplied by 17, so you will want to take the inverse operation and use it on the 17 m, which in this case is division. You are then going to divide by all 3 sides.

85/17=5

17m/17=m

136/17=8

5<m<8 is your 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.