[" 18.If "3x+(2)/(x)=7," then "(9x^(2)-(4)/(x^(2)))=],[[" (a) "25," (b) "35," (c) "49]]

If 3x+(2)/(x)=7, then (9x^(2)-(4)/(x^(2)))=25 (b) 35(c)49(d)30

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

If 3x+2/x=7, then (9x^2-4/(x^2))=? (a)25 (b) 35 (c) 49 (d) 30

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

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

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

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

(x+1)(x+2)(x+6)=x^(3)+9x^(2)+4(7x-1)

{:("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)):}