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The expansion of (5x - 1)^2 is...

The expansion of `(5x - 1)^2` is

A

`25x^2 - 5x + 1`

B

`25x^2 - 10x -1`

C

`25x^2- 10x + 1`

D

`25x^2+ 10x + 1`

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