Question

63²-66×63+33²
помогите пожалуйста ​

Answer 1

${63}^{2} - 66 \times 63 + {33}^{2} = {63}^{2} - 2 \times 33 \times 63 + {33}^{2} = {(63 - 33)}^{2} = {30}^{2} = 900$

Answer 2

3969-4158+1089=900

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