Answered

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Jane and Jill were simplifying the expression

(2x² + x) + 21-x² + x) and obtained different answers. Who is

correct and why?

Sagot :

miriammenenguez

2x2+x+21−x2+x

=2x2+x+21+−x2+x

=2x2+x+21+−x2+x

=(2x^2+−x^2)+(x+x)+(21)

=x^2+2x+21

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