Question

HELPPPPP I WILL GIVE BRAINLIEST TO THE CORRECT ANSWER (see attachment)

Answer 1

4x² + 2x + 3

given following : ( 3x² + 4x - 6 ) + ( x² - 2x + 9 )

solving steps:

$\rightarrow \sf ( 3x^2 + 4x - 6 )+ ( x^2 - 2x + 9 )$

$\rightarrow \sf 3x^2 + x^2 +4x -2x -6 +9$

$\rightarrow \sf 4x^2+2x+3$