Question

1. (9m + 6) + (-5m - 6)

2. (3r^2 + 7r + 1) + (4r^2 - 8r - 2)

3. (h + 1) - (9h + 4)

4. (-7w^2 -2w - 1) - (-5w^2 + 3w - 2)

5. Look at the given rectangle. Write a polynomial expression in simplest form for the perimeter of the rectangle.

5x + 5
_______________________
2x| |2x
- | |-
1 | |1
----------------------------------------
5x + 5
Please help ty!

Answer 1

Dang
for 5 it is a rectangle with a length of 5x+5 and a width of 2x-1

Answer 2

2. (3r^2 + 7r + 1) + (4r^2 - 8r - 2)

pretend there is a 1 in front
= 1(3r^2 + 7r + 1) + 1(4r^2 - 8r - 2)
= 3r^2 + 7r + 1 + 4r^2 - 8r - 2
= 7r^2 - r - 1

3. (h + 1) - (9h + 4)
pretend there is a -1 in front of the second bracket
= 1(h+1) - 1(9h + 4)
= h + 1 - 9h - 4
= -8h - 3

do #1 and #4 the same way

#5, can't make out what that is, but will guess the sides of the
rectangle are 5x+5 and 2x-1

perimeter = 2(5x+5) + 2(2x-1)
= 10x + 10 + 4x - 2
= 14x + 8

Answer 3

Thank youuu!!