Solve the equation `9^(|x-2|)-4.3^(-|x-2|)-a=0` for every real number a.

Solve the equation x^(2)-4x+[x]+3=0

Solve the equation: x^(2)+3x+9=0

Solve the equation (x^(2)-3x)^(2)+3x^(2)-9x-28=0 for real roots.

Solve the equation: 3x^(2)-4x+(20)/(3)=0

Solve the equation 2x^2 + 14x + 9=0

Solve the equation x^9 - x^5 + x^4 -1=0

Solve the equation 4x^(2)+9=0 by factorization method.

Solve the equation x ^ 9 - x ^ 5 + x ^ 4 - 1=0

If the equation x^(2)+9y^(2)-4x+3=0 is satisfied for all real values of x and y, then

A function f, defined for all positive real numbers, satisfies the equation f(x^(2))=x^(3)=x^(3) for every gt0. Then the value of f'(4) is