`(x^2-4x-21)=?`

The value of x satisfying log_((2x+3)) (6x^2+23x+21)=4-log_((3x+7)) (4x^2+12x+9) is

Write down the relations between the roots and the coefficients of the bi-quadratic equation x^4-2x^3+4x^2+6x-21=0

Write down the relations between the roots and the coefficients of the bi-quadratic equation x^4-2x^3+4x^2+6x-21=0

int(dx)/(sqrt(21+4x-x^2))=

Solve: (16x^2-20x+9)/(8x^2+12x+21)=(4x-5)/(2x+3)

(16x^(2)-20x+9)/(8x^(2)+12x+21)=(4x-5)/(2x+3)