Explicación paso a paso:
[tex](x + 1)(2x - 1) \\ x \times 2x - x + 2x - 1 \\ 2 {x}^{2} - x + 2x - 1 \\ 2 {x}^{2} + x - 1 [/tex]
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Explicación paso a paso:
[tex](x + 1)(2x - 1) \\ x \times 2x - x + 2x - 1 \\ 2 {x}^{2} - x + 2x - 1 \\ 2 {x}^{2} + x - 1 [/tex]