Need answer for 27th sum
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1
Answer:
hope this helps u just using the basic formula
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Answered by
1
Answer:
10
Step-by-step explanation:
(a-b)^2=a^2 + b^2 - 2ab
(8)^2=84 -2ab
-2ab = 64-84
-ab = -20/2
ab = 10
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