ELENA5770 ELENA5770 08-11-2022 Mathématiques Answered 1. Factoriser:a. (x+3)(x + 1) + (3x − 1) (x + 3) b. (2x + 1) (4x − 1) + (2 + x) (2x + 1) C.(5− x)² + (5 − x) (x + 1)
