25a^2-81d^2=

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Solution for 25a^2-81d^2= equation: 


Simplifying
25a2 + -81d2 = 0

Solving
25a2 + -81d2 = 0

Solving for variable 'a'.

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

Add '81d2' to each side of the equation.
25a2 + -81d2 + 81d2 = 0 + 81d2

Combine like terms: -81d2 + 81d2 = 0
25a2 + 0 = 0 + 81d2
25a2 = 0 + 81d2
Remove the zero:
25a2 = 81d2

Divide each side by '25'.
a2 = 3.24d2

Simplifying
a2 = 3.24d2

Take the square root of each side:
a = {-1.8d, 1.8d}

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