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NCERT Class XII Mathematics Chapter - - Solutions

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Question : 82 of 78
Marks: +1, -0
The planes: 2x – y + 4z = 5 and 5x – 2.5y + 10z = 6 are
Solution:  
Here 25=−1−2.5=410\frac{2}{5} = \frac{-1}{-2.5} = \frac{4}{10}
∴ The given planes are parallel.
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