Question

evaluate the expressions for the values given below.

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

Answer 1

(2mn+m²+n²)(m²−2mn+n²)
=(m+n)² (m-n)²
= (m² - n²)²
= (2²-1²)²
= 3²
=9

Answer 2

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•°• Refer to the attached file •°•

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