Find the sum of: `5x` and `7x`

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

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

Find the product of 5x, 6y and 7z.

If p(x)= 5x^8-4x^6-5x^3+7x^2-100 . Find the degree of p(x) and coefficients of x^2,x^3 and constant term

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

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

Find the sum to indicated number of terms in each of the geometric progressions in x^3,x^5,x^(7), .........n terms (if x ne pm 1 )

Find the sum and product of roots of x^(2)+7x+12=0

Find the roots of the equation 5x^2-7x-6=0 by the method of completing the square.

Find the roots of the quadratic equation by applying the quadratic formula. 5x^(2) - 7x - 6 = 0