bonsoir , factorise chaques expression. D= 9x^2 + 30x + 25 E= x^2 + 10x + 25 F= 4t^2 + 24t + 36

Bonjour,

D = 9x² + 30x + 25 = (3x)² + 2(3x)(5) + 5² = (3x+5)²

E = x² + 10x + 25 = x² + 2(x)(5) + 5² = (x+5)²

F = 4t² + 24t + 36 = (2t)² + 2(2t)(6) + 6² = (2t + 6)²