NEED HELP ASAP For each equation, determine whether the equation is true for all, some, or no values of x. Explain how you know.

a 3x = x + 8

b. 5x = x + x + x + x + x

c. 2 ( x + 5 ) = 2x + 5

a.) not true

b.) true

c.) true

Step-by-step explanation:

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.

it’s supposed to be -4+45=41

step-by-step explanation: