Jane and Jill were simplifying the expression
(2x² + x) + 21-x² + x) and obtained differ...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 00:09, kcameronanderso
Jane and Jill were simplifying the expression
(2x² + x) + 21-x² + x) and obtained different answers. Who is
correct and why?
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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