Réponses

2014-03-17T15:32:09+01:00
J=√12 + √27  = √(3x4) + √(3x9) = √(3x2³) +√(3x3²)=2√3 + 3√3=5√3
K= √2 - √8 = √2 -√(2x4)=√2 - 2√2=-√2
L= √16 - √25 = √4² - √5² = 4-5=-1
M = 3√2 -5√8 + 3√18=3√2 - 5√(2x4) +3√(2x9)=3√2 -5x2√2 +3x3√2 = 3√2 -10√2 +9√2
M = 2√2
N = 5√12 -3√3 = 5√(3x4) -3√3 = 2x5√3 -3√3=10√3 -3√3=7√3