Explicación paso a paso:
(2x+3)(2x+3) -2(2x^2-1)
(2x+3)^2 - 4x^2 +2
4x + 12x + 9 - 4x^2 +2
12x + 11
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Explicación paso a paso:
(2x+3)(2x+3) -2(2x^2-1)
(2x+3)^2 - 4x^2 +2
4x + 12x + 9 - 4x^2 +2
12x + 11