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Find k if the following lines are perpen...

Find k if the following lines are perpendicular
`(k+2)x+(2k+1)y=7 " and " 5x-4y=23`

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OSWAAL PUBLICATION-SAMPLE PAPER 8-EXERCISE
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  2. Find the multiplicative inverse of (2+sqrt 3i)^2.

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  10. Write the following relations as the sets of ordered pairs:(ii)A realt...

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