Question

Resolva a equação modular |x|^2 - 5|x|+6=0

Answer 1

x2−5x+6=0

(1)⋅x2+(−5)⋅x+(6)=0

x=−(−5)±(−5)2−4⋅(6)−−−−−−−−−−−−−√2

x=5±25−(24)−−−−−−−−√2

x=5±1–√2

x=5±(1)2

x1=62=(2)⋅(3)(2)=3

x2=42=(2)⋅(2)(2)=2