Question

solve the following
$(2m -2n) {}^{2}$
​

Answer 1

Answer:

4mn

Step-by-step explanation:

2m+2n

4mn

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Answer 2

(a-b)² = a² - 2ab + b²

= (2m-2n)²

= (2m)² - 2(2m)(2n) + (2n)²

= 4m² - 8mn + 4n²

= 4( m² - 2mn +n² )

= 4(m-n)²

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