A^2-b^2=20

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Solution for A^2-b^2=20 equation: 


Simplifying
A2 + -1b2 = 20

Solving
A2 + -1b2 = 20

Solving for variable 'A'.

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

Add 'b2' to each side of the equation.
A2 + -1b2 + b2 = 20 + b2

Combine like terms: -1b2 + b2 = 0
A2 + 0 = 20 + b2
A2 = 20 + b2

Simplifying
A2 = 20 + b2

Reorder the terms:
-20 + A2 + -1b2 = 20 + b2 + -20 + -1b2

Reorder the terms:
-20 + A2 + -1b2 = 20 + -20 + b2 + -1b2

Combine like terms: 20 + -20 = 0
-20 + A2 + -1b2 = 0 + b2 + -1b2
-20 + A2 + -1b2 = b2 + -1b2

Combine like terms: b2 + -1b2 = 0
-20 + A2 + -1b2 = 0

The solution to this equation could not be determined.

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