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Mathematics, 19.10.2020 23:01 witcol386

Elena says, "(x + 3)2 can be expanded into x2 + 6x + 9. Likewise, (2x + 3)2 can be expanded into 4x² + 6x + 9."
Find an error in Elena's statement and correct the error. Show your reasoning.

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Elena says, "(x + 3)2 can be expanded into x2 + 6x + 9. Likewise, (2x + 3)2 can be expanded into 4x...

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