5x^(2)-16x-21

Solve the equation x^(3)+5x^(2)-16x-14=0 given x+7 is a root

Solve(8x^(2)+16x-51)/(2x^(2)+5x-12)>3

Find the coordinates of the centre and the radius of the circles whose equations are 4x^(2)+4y^(2)-16x-12y+21=0

Find the zeros of the polynomial f(x)=x^(3)-5x^(2)-16x+80, if its two zeros are equal in magnitude but opposite in sign.

When x^(5)-5x^(4)+9x^(3)-6x^(2)-16x+13 is divided by x^(2)-3x+a , then quotient and remainders are x^(3)-2x^(2)+x+1 and -15x+11 respectively . Find the value of a .

Find all zeroes of the polynomial x^(3)-5x^(2)-16x+80 , if two zeroes of the polynomial are 4 and - 4.

Find by factorization method: 6x^(2)-5x-21=0

The equation (36^(2)+16x-21)/(tx -4) =-9x+5 -(1)/(tx -4) is true for all values of x for which x ne 4/t, where t is a constant. What is the value of t ?

For the ellipse 4x^(2)+5y^(2)-16x-30y+60=0 , which of the following is true ?