" If "3x+(2)/(x)=7," then "(9x^(2)-(4)/(x^(2)))=

If (3x-(2)/(x))=5 , then the value of (9x^(2)-(4)/(x^(2))) is :

Simplify (x+4)/(3x+4y) xx (9x^(2) - 16y^(2))/(2x^(2) +3x-20)

(9x+7)/(2)-(x-(x-2)/(7))=36

If |3x | != 2 , what is the value of (9x^2 - 4)/(3x + 2) - (9x^2 - 4)/(3x - 2) ?

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)

If 2x-1/(3x)=y then 9x^2+1/(4x^2) in terms of y is

{:("Column" A ,, "Column" B), ((3x^(2) - 5)- (2x^(2) - 5 + y^(2)) ,, (a) x^(2) + xy + y^(2)) , (9x^(2) - 16y^(2) ,, (b) 2) , ((x^(3) - y^(3))/(x-y) ,, (c) (9x + 16y) (9x - 16y)) , ("The degree of " (x + 2) (x+3) ,, (d) x^(2) - y^(2)) , (,, (e) 1) , (,, (f) (3x + 4y) (3x - 4y)):}

Simplify the following : 5x^(4) - 7x^(2) +8x - 1 +3x^(2) - 9x^(2) + 7 - 3x^(4)+11x - 2 +8x^(2)