Explicación paso a paso:
[tex]f(x) = 2(x - 1)(x + 2) \\ f(x) = 2( {x }^{2} + 2x - x - 2) \\ f(x) = 2( {x}^{2} + x - 2) \\ f(x) = 2 {x}^{2} + 2x - 4[/tex]
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Explicación paso a paso:
[tex]f(x) = 2(x - 1)(x + 2) \\ f(x) = 2( {x }^{2} + 2x - x - 2) \\ f(x) = 2( {x}^{2} + x - 2) \\ f(x) = 2 {x}^{2} + 2x - 4[/tex]