Expand (2x - 1)^5*(2x + 1)^5.
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\((2x - 1)^5\cdot (2x + 1)^5\\ =((2x - 1)(2x + 1))^5\\ =(4x^2-1)^5\\ =\color{blue}1024x^{10}-1280x^8+640x^6-160x^4+20x^2-1\)
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