Enter an equation for the statement. Four times the length of a segment x is 7ft.

the equation is =

4x= 7ft.

Step-by-step explanation: Since, there is a four and an unknown variable (x), put them together to create 4x. Then, put an equal sign, and put 7 feet next to the equal sign.

yes yes yes yes yes yes yes yes yes

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.