joshuasheng823 joshuasheng823 19-12-2020 Mathematics contestada Please help ASAP with these problems! Prove that: (12^13-12^12+12^11)(11^9-11^8+11^7) is divisible by 3, 7, 19, and 37. _ times 3 times 7 times 19 times 37 Factor completely: (4x^a+2)+20x^a Factor completely: (15x^2c+3)-(25x^c+1)