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anonymous
 one year ago
please help!
anonymous
 one year ago
please help!

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The 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)

welshfella
 one year ago
Best ResponseYou've already chosen the best response.0Part A total length = 3x^2  4x  1 + 4x  x^2 + 5

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thats the whole answer?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thank you! Can you help me with part C please!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you need to use algebraic properties associative or commutative

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can you help please!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yeah, just a second. let me work it out. ok?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok....see if this will help you...i had to type it in another program because it helps me with the math...

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Side 1 = 8x²  5x  2 Side 2 = 7x  x² + 3 Perimeter, P = 4x³  3x² + 2x  6 A. ) Length, L = Side 1 + Side 2 Subbing known values, L = 8x²  5x  2 + 7x  x² + 3 L = 8x²  x²  5x + 7x  2 + 3 L = 7x² + 2x + 1 Total Length of Two Sides = 7x² + 2x + 1 ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ B.) Third Side, S = P  Side 1  Side 2 Subbing, S = 4x³  3x² + 2x  6  (8x²  5x  2)  (7x  x² + 3) S = 4x³  3x² + 2x  6  8x² + 5x + 2  7x + x²  3 S = 4x³  3x²  8x² + x² + 2x + 5x  7x  6 + 2  3 S = 4x³  10x²  7 Third Side = 4x³  10x²  7 ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ C.) Adding or subtracting the polynomials yields polynomials so they are closed under addition and subtraction.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay thank you so much!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait...i might of did that wrong... wait...does your question have answers? or do you have to make them?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I ahve to type them.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0oh...ok well i hope this helps...and i hope it is right...im pretty positive they are...
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