Respuesta :

Answer:

You will subtract these top 2

- 7 {a}^{2}  + 3a - 9 - 7 {a}^{2}  + 3a - 9

5 {a}^{2}  - 6a - 45 {a}^{2}  - 6a - 4

and this bottom one is your ANSWER

- 12 {a}^{2}  - 110a - 22

Following are the calculation for the subtraction:

Given:

[tex]\to7a^2+3a-9-7a^2-( 5 {a}^{2} - 6a - 45 {a}^{2} - 6a - 4)[/tex]

To find:

subtraction=?

Solution:

[tex]\to 7a^2+3a-9-7a^2-( 5 {a}^{2} - 6a - 45 {a}^{2} - 6a - 4)\\\\\to 7a^2+3a-9-7a^2- 5 {a}^{2} + 6a +45 {a}^{2} + 6a + 4\\\\\to 52a^2+15a-9-12 {a}^{2} + 4\\\\\to 40a^2+15a-5\\\\[/tex]

Therefore, the final answer is "[tex]40a^2+15a-5[/tex]".

Learn more:

brainly.com/question/20785064