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= 2( -x -1)
= -2x -2
Si te sirvió dale a mejor respuesta. c:
= 2[( x + 1) - 1]
= 2(x +1) - 2
= 2x + 2 -2
= 2x + (+2-2)
= 2x + (0)
= 2x
otra forma
= 2[( x + 1) - 1]
= 2( x + 1 - 1)
= 2(x + (+1-1))
= 2(x + (0))
= 2(x + 0)
= 2x
saludos...