Question

Plz help i will give him 50 points for all corrwct ans​

Answer 1

Answer:

39 ) A)

40) C)

41) D)

Step-by-step explanation:

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Answer 2

1) (5^0+4^0)(5^0-4^0)

(1+1)(1-1)

2×0=0

2) 3

3)a^2-b^2=(a+b)(a-b)

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