Sagot :
SOLUTION
[tex](20 {x}^{2} - 10x - 10) - ( 18{x}^{2} - 10x - 15) \\ (20 {x}^{2} - 10x - 10) + ( - 18 {x}^{2} + 10x + 15) \\ (20 {x}^{2} - 18 {x}^{2} - 10x + 10x - 10 + 15) \\ \boxed{(2 {x} + 5)} [/tex]
ANSWER
[tex] \: \blue{ \boxed{\large{2x + 5}}}[/tex]
[tex] \overbrace{ \underbrace{ \tt{} \purple{ \: \: Stay \: safe \: and \: God \: bless \: you! \: \: }}}[/tex]