Choose the correct simplification and demonstration of the closure property given: (4x3 + 3x2 − 6x) − (10x3 + 3x2). −6x3 − 6x; is a polynomial
−6x3 − 6x; may or may not be a polynomial
−6x3 − 6x2 − 6x; is a polynomial
−6x3 − 6x2 − 6x; may or may not be a polynomial

Answer:

 −6x³ − 6x; is a polynomial

Explanation:

               [ open brackets ]

                [ group terms ]

              [ final answer ]

given : the shape of his satellite can be modeled by   where x and y are modeled in inches.

now,the given equation   is a equation of parabola.

here, coefficient of x is positive, hence the parabola opens rightwards.

on comparing this equation with standard equation , we get

in standard equation, coordinates of focus=(0,m)

thus for given equation coordinates of focus=(0,1.5)

step-by-step explanation: