2021 December ACT (E23)
The video playlist below organizes explanations to all of the mathematics questions in the 2021 December ACT test (Form code E23).
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Online Resource for ACT Math
Q41, not sure I understand where 6x comes from on the expansion. Thx
The $6x$ term results from the expansion of the term $(x-3)^2$.
Inferesting
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Nice