ax^2-20=0

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Solution for ax^2-20=0 equation: 


Simplifying
ax2 + -20 = 0

Reorder the terms:
-20 + ax2 = 0

Solving
-20 + ax2 = 0

Solving for variable 'a'.

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

Add '20' to each side of the equation.
-20 + 20 + ax2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + ax2 = 0 + 20
ax2 = 0 + 20

Combine like terms: 0 + 20 = 20
ax2 = 20

Divide each side by 'x2'.
a = 20x-2

Simplifying
a = 20x-2

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