Question

(2x^{2} + 4x+ 7)+(x^{2} - 5x-4)

Answer 1

Answer:

3x^2 - x + 3

Step-by-step explanation:

To simplify first simplify everything in each of the parenthesis

When you do this nothing should be simplified because there isn't any like terms

Now the equation becomes 2x^2 + 4x + 7 + x^2 - 5x - 4

Lastly add 2x^2 and x^2, subtract 4x and 5x, subtract 4 from 7

This makes the equation 3x^2 - x + 3

Answer 2

Answer:

3x^2-x+3

Step-by-step explanation:

First, distribute the plus to the second equations like shown:

2x^2+4x+7+x^2-5x-4

Second, combine like terms:

2x^2+x^2=3x^2

4x-5x=-x

7-4=3

Third, put them together

Therefore, 3x^2-x+3 is the answer