Answer:
Answers below
Step-by-step explanation:
1. The first expression tells the total number of students as well as the male students. This means you only have to subtract to find the female number
7x^2+8x-16-(3x^2+14); Simplify
4x^2+8x-30, if you wanted it factored then if would be this;
2(2x^2+4x-15).
2. For this one you add the polynomials.
x^2-9x+11+2x^2+4x-5; Simplify
3x^2-5x+6
3. Ok, for this one you have the number of miles traveled on Monday and Tuesday ( x^2+8x-13+(x^2+10)) and the total numbers traveled from Mon.-Wed (2x^2+20x+19). So, you first need to add Monday and Tuesday and then subtract that amount from the total of miles on Mon.-Wed.
( x^2+8x-13+(x^2+10))
=2x^2+8x-3
2x^2+20x+19-(2x^2+8x-3)
=12x+21, or if you wanted it factored;
3(4x+7)
