hola :3
[tex]=x^{2} -4x+4+(x+2)^{2}[/tex]
[tex]=x^{2} -4x+4+x^{2} +4x+4[/tex]
[tex]=2x^{2} +8[/tex]
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hola :3
[tex]=x^{2} -4x+4+(x+2)^{2}[/tex]
[tex]=x^{2} -4x+4+x^{2} +4x+4[/tex]
[tex]=2x^{2} +8[/tex]
es la 3
creeme :C
saludos
att :sam