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Mathematics, 22.09.2019 20:10 lsrgb

Idon't understand how to verify if expressions are equivalent algebraically, i can't find this anywhere in my pre-calculus notes.
if somebody could show me how to verify this expression, and explain their steps somewhat, so i can use it as an example, that would be a really big !


Idon't understand how to verify if expressions are equivalent algebraically, i can't find this anywh

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