Respuestas
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-![(x+3)^{2} = x^{2} +2(x)(3) + 9 (x+3)^{2} = x^{2} +2(x)(3) + 9](https://tex.z-dn.net/?f=+%28x%2B3%29%5E%7B2%7D+%3D++x%5E%7B2%7D+%2B2%28x%29%283%29+%2B+9)
![(x+3)^{2} = x^{2} +6x + 9 (x+3)^{2} = x^{2} +6x + 9](https://tex.z-dn.net/?f=%28x%2B3%29%5E%7B2%7D+%3D+x%5E%7B2%7D+%2B6x+%2B+9)
-![(x + \sqrt{7})^{2} = x^{2} + 2(x)( \sqrt{7}) + ( \sqrt{7} )^{2} (x + \sqrt{7})^{2} = x^{2} + 2(x)( \sqrt{7}) + ( \sqrt{7} )^{2}](https://tex.z-dn.net/?f=%28x+%2B++%5Csqrt%7B7%7D%29%5E%7B2%7D+%3D++x%5E%7B2%7D+%2B+2%28x%29%28+%5Csqrt%7B7%7D%29+%2B+%28+%5Csqrt%7B7%7D+%29%5E%7B2%7D+)
![(x + \sqrt{7})^{2} = x^{2} + x 2\sqrt{7} + 7 (x + \sqrt{7})^{2} = x^{2} + x 2\sqrt{7} + 7](https://tex.z-dn.net/?f=%28x+%2B+%5Csqrt%7B7%7D%29%5E%7B2%7D+%3D+x%5E%7B2%7D+%2B+x+2%5Csqrt%7B7%7D+%2B+7+)
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