Question

HELP

Answer 1

The lengths of two sides of a triangle are shown below:
Side 1: 3x^2 - 2x - 1
Side 2: 9x + 2x^2 - 3
The perimeter of the triangle is 5x^3 + 4x^2 - x - 3.

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

Answer 2

Im guessing you have to add. so. \[3x^2-2x-1+9x+2x^2-3\]

Answer 3

Okay, and which terms do we combine? Can you walk me through it?

Answer 4

Okay, so you combine like terms. So you would Combine

Answer 5

\[3x^2+2x^2 and -2x+9x and -1-3 \]

Answer 6

You will get \[5x^2+7x-4\]

Answer 7

I know which ones to combine I just don't really remember how to combine the coefficients and the exponents

Answer 8

Oh, you dont combine the exponents, Just the coefficients. c:

Answer 9

Oh okay!