Find the sum of: `3x^2, -7x^2, 8c^2`

Find the sum of: 5x and 7x

Find the sum of: 7x^2y and -6x^2y

Find the sum of the like terms . 3x^(2),-7x^(2),8x^(2)

Find the sum of the like terms : 7x^2y,-5x^2y

Find the coefficient of x^2 in (7x^3 - (2)/(x^2))^9

IF A,B,C, are the minimum value of x^2 -8x +17 , 2x^2 +4x -5 , 3x ^2 -7x +1 then the ascending order of A,B,C is

If -1,2 and alpha are the roots of 2x^3 +x^2-7x-6=0 , then find alpha

If alpha, beta, 1 are the roots of x ^(3) - 2x ^(2) - 7x + 6 =0, then find alpha, beta.