`8x^2 - 18` =

Solve the equation 8x ^(3) - 36 x ^(2) - 18 x + 81 = 0 the roots being in A.P.

Is the function: f(x) = (x^(2) - 8x + 18)/(x^(2) + 4x + 30) one-one?

Factorise completely : 8x^2 y - 18y^3

Using completing the square method, show that the equation x^(2) - 8x + 18 = 0 has no solution.

Using completing the square method, show that the equation x^2 - 8x + 18 = 0 has no solution.

The centre of the smallest circle touching the circles x^2+ y^2-2y -3=0 and x^2 +y^ 2-8x -18y +93= 0 is:

The centre of the smallest circle touching the circles x^2+ y^2-2y -3=0 and x^2 +y^ 2-8x -18y +93= 0 is:

Factorise : 5x^(2) - 18x -8

If x=9 is the chord of contact of the hyperbola x^2-y^2=9 then the equation of the corresponding pair of tangents is (A) 9x^2-8y^2+18x-9=0 (B) 9x^2-8y^2-18x+9=0 (C) 9x^2-8y^2-18x-9=0 (D) 9x^2-8y^2+18x+9=0

If x=9 is the chord of contact of the hyperbola x^2-y^2=9 then the equation of the corresponding pair of tangents is (A) 9x^2-8y^2+18x-9=0 (B) 9x^2-8y^2-18x+9=0 (C) 9x^2-8y^2-18x-9=0 (D) 9x^2-8y^2+18x+9=0