Question

The lengths of two sides of a triangle are shown below:

Side 1: 3x2 - 4x - 1
Side 2: 4x - x2 + 5

The perimeter of the triangle is 5x3 - 2x2 + 3x - 8.

Part A: What is the total length of the two sides, 1 and 2, of the triangle? (4 points)

Part B: What is the length of the third side of the triangle? (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)

Answer 1

plzzzzz help

Answer 2

find the solution of these quadratic equations

Answer 3

\[perimeter =side1+side2+side3\]

Answer 4

can u help me work it out

Answer 5

show ur work i will find mistakes

Answer 6

i dont k how to do it

Answer 7

part A ,
Add side 1 and side 2

Answer 8

i got this for A 2x^2+4

Answer 9

yes its correct

Answer 10

and i got this for B
-5x^3+3x-4

Answer 11

its wrong

Answer 12

look again at the perimeter formula i gave

Answer 13

\[third side=perimeter-(first side +second side)\]

Answer 14

-2x^3-4 this is what i got

Answer 15

nope

Answer 16

look at the third side formula

Answer 17

ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh

Answer 18

5x^3-2^2+3x-8 - (2x^2+4)

Answer 19

i'm stuck on how to solve this

Answer 20

is this right so far

Answer 21

wait i messed up on the subtraction

Answer 22

5x^3-2x^2+3x-8 (-2x^2+6)

Answer 23

5x^3-2x^2+3x-8 -(2x^2+4)