" 7."15x^(2)-28=x

Solve each of the following quadratic equations: 15x^(2)-28=x

If x_(1) and x_(2) are the roots of 15x^(2)+28x+12=0, then

Using factor theorem, show that (x-5) is a factor of the polynomial 2x^(3) - 5x^(2) - 28x + 15

By completing the following activity, find the values of x such that f(x) = 2x^(3) - 15x^(2) - 84x -7 is (i)decreasing function. (ii) increasing function

15x^(2)-7x-36=0:

2x^(2)-7x-15

If 3x^(2)-7x+2=0 and 15x^(2)-11x+a=0 have a common root and a is a positive real number then the sum of the roots of the equation 15x^(2) -ax +7=0 is

Find the values of x such that f(x)=2x^(3)-15x^(2)-84x-7 is a decreasing function.

Add 7x^(2) -8x + 5, 3x^(2) -8x +5 and -6x^(2) + 15x - 5