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?

part b: what is the length of the third side of the triangle?

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

The manufacturer of a new product developed the following expression to predict the monthly profit, in thousands of dollars, from sales of the productwhen it is sold at a unit price of x dollars.-0.5x^2 + 22x - 224what is represented by the zero(s) of the expression? a.the profit when the unit price is equal to 0b.the unit price(s) when the profit is equal to 0c.the profit when the unit price is greatestd.the unit price(s) when profit is greatest

You have 12 balloons to blow up for your birthday party. you blow up 1/3, and your friend blows up 5 of them. what fraction of the baloons still need blowing up

Aboard 60 in. long is cut two parts so that the longer piece is 5 times the shorter. what are the length of the two pieces?