Find the Value of `(x^2-4)/(x+2)` if `x=3`

Find the value of 3(x^2-2)+4x-8 when x=-2

Find the value of : 2x^(2)-3x+4 where x=2

Find the value of k, if (3x-4)/((x-3)(x+k))=(1)/(x-3)+(2)/(x+k)

(i) If x = (6ab)/(a + b) , find the value of : (x + 3a)/(x - 3a) + (x + 3b)/(x - 3b) . (ii) a = (4sqrt(6))/(sqrt(2) + sqrt(3)) , find the value of : (a + 2sqrt(2))/(a - 2sqrt(2)) + (a + 2sqrt(3))/(a - 2sqrt(3)) .

If x^(2) +(1)/(x^(2)) = 7. find the values of , 3x^(2) - (3)/(x^(2))

If (4x+3y)/(4x-3y)=7/4 use the properties to find the value of (2x^2-11y^2)/(2x^2+11y^2)

Find the value of x - (2-3x)/4+(3-2x)/5=2-x

Find the value of x^4+9x^3+35 x^2-x+4 for x=-5+2sqrt(-4).

If x-1/x=3,\ find the values of x^2+1/(x^2)a n d\ x^4+1/(x^4)dot

If 2x= 3+ sqrt7 , find the value of : 4x^(2) +(1)/(x^(2))