Respuesta:
Explicación paso a paso:
[tex]\frac{4sen^{2} - 1 }{2senx+1} = 2senx-1[/tex]
[tex]\frac{(2senx)^{2}-1^{2} }{2senx+1} =2senx-1[/tex]
[tex]\frac{(2senx+1)(2senx-1)}{2senx+1} =senx -1[/tex]
[tex]2senx-1=2senx-1[/tex]
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Respuesta:
Explicación paso a paso:
[tex]\frac{4sen^{2} - 1 }{2senx+1} = 2senx-1[/tex]
[tex]\frac{(2senx)^{2}-1^{2} }{2senx+1} =2senx-1[/tex]
[tex]\frac{(2senx+1)(2senx-1)}{2senx+1} =senx -1[/tex]
[tex]2senx-1=2senx-1[/tex]