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Prove that: |x+y xx5x+4y4x2x 10 x+8y8x3x...

Prove that: `|x+y xx5x+4y4x2x 10 x+8y8x3x|=x^3` .

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The correct Answer is:
Proved
$$ \left|\begin{array}{ccc} x+y & x & x \\ 5 x+4 y & 4 x & 2 x \\ 10 x+8 y & 8 x & 3 x \end{array}\right| $$ Taking `x` common from both `C_{2}` and `C_{3}` we get ...
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RD SHARMA-DETERMINANTS-Solved Examples And Exercises
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