Question

6a² + 7a + 3 ; 9a² - 2a + 7:4a² - 2a + 9 ​

Answer 1

19a² + 3a + 19.

Step-by-step explanation:

We've to add;

$(6a {}^{2} + 7a \: + 3) + (9a {}^{2} - 2a + 7) \\ + (4a {}^{2} - 2a + 9)$

Let's solve,

now opening brackets

$6a {}^{2} + 7a + 3 + 9a {}^{2} - 2 a + 7 \\ + 4a {}^{2} - 2 a + 9$

now arranging them

=> 6a² + 9a² + 4a² + 7a - 2a - 2a + 3 + 7 + 9

=> 19a² + 3a + 19.