Find the value of `x:((2^(x))/(5^(x)))-:((5)/(2))^((-(x+3)))=((2)/(5))^(x+6)`

Find the value of x if ((6)/(5))^(x)*((5)/(6))^(2x)=(125)/(216)

Find the value of X: (5)/(4) -(7)/(6)-((-2)/(3)) =X

Find the value of x^2-x(x-5) when x=-2

Find the value of 5x^2-3x+7 at x=0

If x=-3 find the value of 4x^2-5x+3

Find the minimum value of f(X)=x^(2)-5x+6 .

Let the equation x^(5) + x^(3) + x^(2) + 2 = 0 has roots x_(1), x_(2), x_(3), x_(4) and x_(5), then find the value of (x_(2)^(2) - 1)(x_(3)^(2) - 1)(x_(4)^(2) - 1)(x_(5)^(2) - 1).

Find the value of x in each of the following: ((3)/(5))^(x)((5)/(3))^(2x)=(125)/(27) (ii) 5^(x-2)x3^(2x-3)=135