shahmonika2501 shahmonika2501 07-04-2022 Mathematics contestada pls help me pls write method add1) 3x²+5x-8 ; 2x²-9x+92) 8xy+19-5x² ; 7x²-5+3xysubtract 1) 9x²-5x+3xy-8 from 2x²-8x-4xy+9