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10.Using suitable identity prove that: q...

10.Using suitable identity prove that: `qquad ((0.87)^(3)+(0.13)^(3))/((0.87)^(2)-(0.87times0.13)+(0.13)^(2))=1`

A

`1/2`

B

2

C

1

D

`2 1/2`

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