T4e2i8b9d5go T4e2i8b9d5go Mathematics Answered Factor 10x5 +5x2 -15 5 (225 + x2 – 3) 10 (225 + 5x2 – 15) 5 (2005 + 5x2 – 15) 5x2 (2x3 + x - 3)