[tex]1. \: \: \: \: \: {4x}^{2} - 4x + 1 = {(2x - 1)}^{2} [/tex]
[tex]2. \: \: \: \: \: {64n}^{2} - 80nq + {25q}^{2} = {(8n - 5q)}^{2} [/tex]
[tex]3. \: \: \: \: \: 80xy + {16x}^{2} + 1 {00y}^{2} = {(4x + 10y)}^{2} [/tex]
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[tex]1. \: \: \: \: \: {4x}^{2} - 4x + 1 = {(2x - 1)}^{2} [/tex]
[tex]2. \: \: \: \: \: {64n}^{2} - 80nq + {25q}^{2} = {(8n - 5q)}^{2} [/tex]
[tex]3. \: \: \: \: \: 80xy + {16x}^{2} + 1 {00y}^{2} = {(4x + 10y)}^{2} [/tex]
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