`(x-5)^2-81=0`

Roots of the quadratic equation are …… for 9x^2-81=0

For what positive value of x the 9x^2-81=0 .

(lim)_(x->3)(x^4-81)/(2x^2-5x-3)

Find all the roots of x^4 - 81 =0

Faqtorise (i). x^(2)-81

(81x^(2)-81)-:(x+1)

Find the solutions of the rational equation (x^2(x^4-81)(x+2)^3)/(x^5-x^4-6x^3)=0 .

The value of x such that 3^(2x)-2(3^(x+2))+81=0 is

Find the values of x which safisfy this rational inequation (x^2-81)/(x^2-25)le0

The complete set of values of a for which the function f(x)=tan^(-1)(x^(2)-18x +a)gt 0 AA x in R is a. (81, infty) b. [81,infty) c. (-infty,81) d. (-infty,81]