Será a equação x² + 3x = x + 6 + x² do 2º grau?

x² + 3x = x + 6 + x²

-x²                      -x²  

      3x = x + 6

     -x   -x      

     2x =      6

      =      

      x =    3

x = 3

step-by-step explanation:

the options are kind of confusing. i can tell you what i see going on here when i look at the graph.

the class and exam medians are closely related, and it looks like the low outlier on the exam did pull the median lower. [tex][/tex]