81a^2-125b^4=

Solution for 81a^2-125b^4= equation:

Simplifying
81a2 + -125b4 = 0

Solving
81a2 + -125b4 = 0

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '125b4' to each side of the equation.
81a2 + -125b4 + 125b4 = 0 + 125b4

Combine like terms: -125b4 + 125b4 = 0
81a2 + 0 = 0 + 125b4
81a2 = 0 + 125b4
Remove the zero:
81a2 = 125b4

Divide each side by '81'.
a2 = 1.543209877b4

Simplifying
a2 = 1.543209877b4

Take the square root of each side:
a = {-1.242259988b2, 1.242259988b2}