" 28."10x^(2)-9x-7

factorize the given expression 10x^2-9x-7

Evaluate: (i) x^(2)+4x+7 when x=2+sqrt(-3) (ii) 2x^(3)-9x^(2)-10x+13 when x=3+sqrt(-5)

Find the square root of the following (4x^(2)-9x+2)(7x^(2)-13x-2)(28x^(2)-3x-1)

Solve the equation (x^(2)-3x)^(2)+3x^(2)-9x-28=0 for real roots.

Prove that there is a zero of the polynomial 2x^(3)-9x^(2)-11x+12 in the interval (2,7) given that 2 and 7 are the zeros of the polynomial x^(4)-6x^(3)-11x^(2)+24x+28 .

Resolve into partial fractions : (10x+30)/((x^(2)-9)(x+7)).