Question

( x-5). (2x +3)-2x (x-3) +x+7

mjk can gap

Answer 1

( x -5 ) . ( 2x+3 )-2x ( x-3 ) +x+7
= 2x^2 +3x -10x -15 - 2x^2 +6x +x+7

= ( 2x^2 -2x^2 ) + ( 3x -10x +6x +x ) - (15 -7 )

= -8