Sagot :
SOLUTION
[tex](6x^{2} + 3x - 1) - (4x^{2} - 5x+9) \\ (6x^{2} + 3x - 1) + ( - 4 {x}^{2} + 5x - 9) \\ \orange{6x^{2} - 4 {x}^{2} } + \red{3x + 5x} \blue{- 1 - 9} \\ \boxed{2{x}^{2} + 8x - 10 }[/tex]
ANSWER
[tex] \large\red{\boxed{2 {x}^{2} + 8x - 10}}[/tex]
[tex]\overbrace{ \underbrace{ \tt{} \purple{ \: \: Stay \: safe \: and \: God \: bless \: you! \: \: }}}[/tex]