how to prove
determinant x+y x x
5x+4y 4x 2x =x3
10x+8y 8x 3x

i cant understand
  • 0
first expand it along c1
then the determinant will be
|x x x| |y x x|
|5x 4x 2x | +|4y 4x 2x|
|10x 8x 3x| | 8y 8x 3x|
take x cube common from the first determinant and prove it oneand prove second determinant 0.... its as simple
  • -2
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  • 5
Now I think this must be clear but u learn properties first of all properly

  • 2

  • 2
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