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Q10 of 111 Page 5

Write the value of: 30³+20³-50³.

We have ,

=

Let

=

Here ,

=

Hence,

=

=

=

=

=

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8

Write the value of: 48³–30³-18³.

9

Write the value of:

1

The factors of a²-1-2x-x² are

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