PLEASE HELP ME! Which of the following equations demonstrate that the set of polynomials is not closed under the certain operations?
A. Multiplication: (x² + 2x)(x + 1) = x2 + 3x + 2x
+
B. Multiplication: (3x4 + x)(-2x4 + x) = -6x8 + x + x
+
X
C. Division: (x2 +
+2x)+(x + 1) = x+
X +1
O D. Addition: 6x4 + x®)+(-2x* + x) =
+2x3

i am sure it will be 90 degrees.

step-by-step explanation:

answer: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

step-by-step explanation: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.