T4E2I8B9D5GO T4E2I8B9D5GO Mathematics Answered Factor 10x5 +5x2 -15 5 (225 + x2 – 3) 10 (225 + 5x2 – 15) 5 (2005 + 5x2 – 15) 5x2 (2x3 + x - 3)