Question

2. Simplify (4m + 5)² + (5m + 4n)²​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

(4m + 5n)² +(5m+4n)²

[(4m)²-2(4m)(5n) +(5n)²]+[(5m)²+2 (5m) (4n)+(4n)²]

=16m²+20mn +25n²+25m²+40mn+16n²

=(16+25)m²+(40+40)mn+(25+16)n²

=41m²+80mn+41n²

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