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find the first derivative:

4xsqrt2x^2+2x-1.

ambiguous ....

is it
4√(2x^2 + 2x + 1)
or
4x√(2x^2 + 2x + 1)or
4√(2x^2) + 2x + 1
or
...

can you see my point ?
You will need brackets.

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