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|[x+y,x,x],[5x+4y,4x,2x],[10x+8y,8x,3x]|...

|[x+y,x,x],[5x+4y,4x,2x],[10x+8y,8x,3x]|=

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Q. |(x+y,x,x),(15x+4y,4x,2x),(10x +8y,8x,3x)|=51x^3 Find the value of x.

Q.det[[x+y,x,x15x+4y,4x,2x10x+8y,8x,3x]]=x^(3)

Prove that: |x+y xx5x+4y4x2x10x+8y8x3x|=x^(3)

Prove that: |x+yx x5x+4y4x2x 10 x+8y8x3x|=x^3 .

From the sum of x^2+3y^2-6x y ,2x^2-y^2+8x y , y^2+8 and x^2-3x y\ subtract -3x^2+4y^2-x y+x-y+3.

From the sum of x^2+3y^2-6x y ,2x^2-y^2+8x y , y^2+8 and x^2-3x y\ subtract -3x^2+4y^2-x y+x-y+3.

Find the values of (x+y ) , if (i) 3x + 4y = 11 , 4x + 3y = 10 (ii) 5x - 2y = 4 , x + 8y = 26

Solve for x and y , 8x + 5y - 11 = 0 3x - 4y - 10 = 0