[tex]a^{2} +a^{2} =z^{2} \\2\sqrt{2} = \sqrt{8} \\\sqrt{16} = z\\4 = z\\4^{2} +8^{2}= t^{2} \\\sqrt{80}=t\\2\sqrt{20} =t\\\sqrt{8}^{2}+ 8^{2}= w^{2} \\8+64=w^{2}\\\sqrt{72} =w\\2\sqrt{18} =w[/tex]
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