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I need help, I have looked on examples on how to figure these problems out and found nothing helpful, please help "/

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

A4m+12
B14m+12
C14m - 12
D4m

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

A7r^2 + 15r -1
B7r2 - r - 1
C7r^2 - 15r - 3
D-r^2 - r - 1

  1. (6h + 1) - (9h + 4)

A-3h - 3
B15h - 5
C-3h + 3
D-3h + 5

  1. (m^2 - m - 4) + (m - 5)

Am^2 - 2m + 9
Bm^2 + 2m - 9
Cm^2 - 2m - 9
Dm^2 - 9

  1. (4x + 4) + (3x + 2 + 1)

A7x + 3
Bx + 7
C7x + 7
D8x + 6

Verified Answer :

durrrachael
  1. D, 9m - 5m equals 4m and 6+(-6) equals 0. When a + and a - are by each other it is a negative.
  2. B, 3r^2 + 4r^2 equals 7r^2. 7r - 8r equals -r. 1 - 2 equals -1.
  3. D, 6h - 9h equals -3h. 1 + 4 equals 5.
  4. D, -m + m equals 0. -4 + -5 equals -9.
  5. C, 4x + 3x equals 7x. 4 + 2 + 1 equals 7

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