Perform a long division
#color(white)(aaaa)##4x^4+0x^3-5x^2+2x-10##color(white)(aaaa)##|##2x-3#
#color(white)(aaaa)##4x^4-6x^3##color(white)(aaaaaaaaaaaaaaaaaa)##|##2x^3+3x^2+2x+4#
#color(white)(aaaa)##0x^4+6x^3-5x^2#
#color(white)(aaaaaaaa)##+6x^3-9x^2#
#color(white)(aaaaaaaa)##+0x^3+4x^2+2x#
#color(white)(aaaaaaaaaaaaaa)##+4x^2-6x#
#color(white)(aaaaaaaaaaaaaa)##+0x^2+8x-10#
#color(white)(aaaaaaaaaaaaaaaaaaaa)##+8x-12#
#color(white)(aaaaaaaaaaaaaaaaaaaaaaaaa)##+2#
The remainder is #=2# and the quotient is #=2x^3+3x^2+2x+4#
#(4x^4+0x^3-5x^2+2x-10)/(2x-3)=(2x^3+3x^2+2x+4)+2/(2x-3)#