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Simplify (3n – 2m)2 = ? 

       A. 6n2 – 12mn – 4m2   B. 9n2 + 12mn + 4m2   C. 9n2 – 12mn – 4m2   D. 9n2 – 12mn + 4m2. the correct answer is D. 9n2 - 12mn + 4m2

Respuesta :

(3n-2m) (3n-2m)

(you multiply the first number (3n) by the first number in the 2nd bracket (3n) and then by the second number in the 2nd bracket (-2m)), and you do the same for -2m

9n2 - 6mn -6nm +4m2

9n2 -12mn + 4m2

Mareska95

Hi!

(3n - 2m)^2 = 9n^2 - 12mn + 4n^2

The correct answer is D. 9n^2 - 12mn + 4n^2

Hope this helps!

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