The lengths of three sides of a quadrilateral are shown below: side 1: 1y2 + 3y − 6 side 2: 4y − 7 + 2y2 side 3: 3y2 − 8 + 5y the perimeter of the quadrilateral is 8y3 − 2y2 + 4y − 26.

part a: what is the total length of sides 1, 2, and 3 of the quadrilateral? (4 points)

part b: what is the length of the fourth side of the quadrilateral? (4 points)

part c: do the answers for part a and part b show that the polynomials are closed under addition and subtraction? justify your answer. (2 points)

this is alegbra 1 9th grade i just need some

Part A : Total length of Given 3 side =

Part B :  Length of side 4 =

Part C : Yes, Part A & Part B shows that Polynomials are closed under addition and subtraction

Step-by-step explanation:

Given: Sides of a quadrilateral, Side 1 = , Side 2 = ,

            Side 3 = .

           Perimeter of Quadrilateral =

To find: [A] Total length of given 3 sides.

             [B] Length of Side 4.

             [C] Do part A & B show that the polynomials are closed

                   under addition and subtraction?

Part A -

Total length of Given 3 side = Side 1 + Side 2 + Side 3

                                               =

                                               =

                                               =

                                               =

                                               =

Part B -

Length of side 4 = perimeter - total length of 3 sides

                           =

                           =

                           =

                           =

                           =

                           =

Part C -

Yes, Part A & Part B shows that Polynomials are closed under addition and subtraction because after addition and subtraction result is also a polynomial.

the answer is b

49%

step-by-step explanation:

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