MonstrousHippo
MonstrousHippo MonstrousHippo
  • 25-01-2020
  • Mathematics
contestada

if x ≥ 0, then x + lxl = ?

Respuesta :

gmany
gmany gmany
  • 25-01-2020

Step-by-step explanation:

[tex]|a|=\left\{\begin{array}{ccc}a&if&a\geq0\\-a&if&a<0\end{array}\right\\\\x\geq0,\ \text{then}\ |x|=x\\\\x+|x|=x+x=2x\geq0[/tex]

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