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" 2."7x,-3x,5x,-x,-2x...

" 2."7x,-3x,5x,-x,-2x

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Add: 7x, -3x, 5x, -x, -2x

If mean deviations about median of x, 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x is 30, then |x| equals:-

If mean deviations about median of x, 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x is 30, then |x| equals:-

If mean deviations about median of x, 2x, 3x, 4x, 5x, 6x, 7x, 8x, 9x, 10x is 30, then |x| equals:-

7x-(2x+5)=3x-2

Add ; 7x^2-4x+5,\ -3x^2+2x-1\ a n d\ 5x^2-x+9.

Add 7x^(2)-4x+5,-3x^(2)+2x-1 and 5x^(2)-x+9

The constant term in the expansion of [(3x+1,2x-1,x+2),(5x-1,3x+2,x+1),(7x-2,3x+1,4x-1)] is