Question

(7+x)² + (14-7+x)² = 10​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

${(7 + x)}^{2} + {(14 - 7 + x)}^{2} = 10 \\ {7}^{2} + {x}^{2} + 2 \times 7 \times x + {(7 + x)}^{2} \\ 49 + {x}^{2} + 14x + {7}^{2} + {x}^{2} + 2 \times 7 \times x \\ 49 + {x}^{2} + 14x + 49 + {x}^{2} + 14x \\ 49 + 49 + {x}^{2} + {x}^{2} + 14x + 14x \\ 98 + 2 {x}^{2} + 28x \: ans.$

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