Question

7. The value of m²-2mn+n² when m=1 and n=2


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Answer 1

Answer:

Given ,

✯ m = 1

✯ n = 2

so

${m}^{2} - 2mn + {n}^{2} \\ \\ = {(1)}^{2} - 2 \times 1 \times 2 + {(2)}^{2} \\ \\ = 1 - 4 + 4 \\ \\ = 1$

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Answer 2

Answer:

7. m2 - 2mn + n2

=4+16+16

=36.

Step-by-step explanation:

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