You can put this solution on YOUR website! is just (2x+1)(2x+1)(2x+1). You need to multiply out 2 of the brackets and collect like terms and then multiply all that by the third bracket.
You should end up with a number of x^3, x^2, x and plain numbers.
You can put this solution on YOUR website!
lay out the three parts
Foil the first two quantities
Distribute out the second quantity across the first
multiply
Combine like terms
Done
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