[" 719.If "quad (1)/(2)" : "],[[" (ii) "x^(3)-3x^(2)-9x," ( ) "x^(2)+2]]

Factorise (i) x ^(2) - 2x ^(2) - x +2 (ii) x ^(3) - 3x ^(2) - 9x -5 (iii) x ^(3) + 13 x ^(2) + 32 x + 20 (iv) y ^(3) + y ^(2) -y -1

Factorise: (i) x^(3)-2x^(2)-x+2 (ii) x^(3)-3x^(2)-9x-5 (iii) x^(3)+13x^(2)+32x+20 (iv)

If 3x - (1)/(3x ) =5 , find : (i) 9x^(2) + (1)/( 9x^2)

If 3x + (1)/(3x) = 3 , find : (i) 9x^(2) + (1)/(9x^2)

Find the values of x for which the following functions are maximum or minimum: (i) x^(3)- 3x^(2) - 9x (ii) 4x^(3)-15x^(2)+12x+1

int_(1)^(2)(3x)/(9x^(2)-1)dx

Obtain the differential coefficient of the following : (i) (x-1) (2x+5) (ii) (9x^(3)-8x+7)(3x^(2)+5) (iii) 1/(2x+1) (iv) (3x+4)/(4x+5) (v) (x^(2))/(x^(3)+1)