Question

evalute (2mn+8) (2mn-8)​

Answer 1

Answer:

Solution

verified

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(−7mn+5)+(12mn+2)+(9mn−8)+(−2mn−3)

=−7mn+5+12mn+2+9mn−8−2mn−3

=12mn−4

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Answer 2

Answer:

4m²n² - 64

Step-by-step explanation:

=> (2mn+8)(2mn-8)

Using (a-b)(a+b) = a² - b²

=> (2mn)² - 8²

=> 4m²n² - 8²

=> 4m²n² - 64