Question

(5mn + 4d) (5mn – 4d)

Answer 1

Answer:

(5mn + 4d) (5mn – 4d)

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(5mn + 4d) (5mn – 4d)

using identity

(a+b)(a-b)=a²-b²

solution

(5mn + 4d) (5mn – 4d)

(5mn)²-(4d)²

25mn-16d²

Step-by-step explanation:

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