njstirrat njstirrat 20-04-2020 Mathematics contestada PLEASE HELP ME!!! Find the sum of 2 x2 + 3 x - 4, 8 - 3 x , and -5 x2 + 2 -3 x2 - 2 -7 x2 - 2 -3 x2 + 6 -7 x2 - 6 x - 2