(3x+2)^2-(4-3x)^2=14+37x
(3х+2)²=9х²+12х+4 (4-3х)²=16-24+9х² 9х²+12х+4-16+24х-9х²=36х-12 36х-12=14+37х -14-12=37х-36х -26=х