simplify 7.83×7.83-1.17×1.17/6.66
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Answered by
286
7.83×7.83-1.17×1.17/6.66
(7.83)² - (1.17)² / 6.66
[(a²-b²) = (a+b) (a-b)]
(7.83+1.17)(7.83-1.17) /6.66
(9)(6.66) / 6.66
= 9
(7.83)² - (1.17)² / 6.66
[(a²-b²) = (a+b) (a-b)]
(7.83+1.17)(7.83-1.17) /6.66
(9)(6.66) / 6.66
= 9
Answered by
58
Answer:
7.83×7.83-1.17×1.17/6.66
Let's input the identity [ a2 -b2]
Now,
=》(7.83) square - (1.17) square/6.66
=》(7.83+1.17)(7.83-1.17)/6.66
=》9×6.66/6.66
=》9
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