What are the values of x in this equation? x4 + 12x = 4x2 + 3x3
A. x = 0, x = -3, x = 2, and x = -2
B. x = 0 and x = 3
C. x = 0, x = 3, x = 2, and x = -2
D. x = 3, x = 2, and x = -2

A. x = 0, x = -3, x = 2, and x = -2

Step-by-step explanation:

by moving the terms on the left side to the right side

factor an from

and factor - 4 from

the equation becomes :

= 0

take  as  a common factor the equation becomes :

= 0

thus

⇒

and

by factoring an x we get :

⇒ = 0 and

⇒ and

Thus

the values are :

x = 0, x = -3, x = 2, and x = -2

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

the answer

b. they are parallel and will never intersect.