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Simplifying 5a2 + -80 = 0 Reorder the terms: -80 + 5a2 = 0 Solving -80 + 5a2 = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '80' to each side of the equation. -80 + 80 + 5a2 = 0 + 80 Combine like terms: -80 + 80 = 0 0 + 5a2 = 0 + 80 5a2 = 0 + 80 Combine like terms: 0 + 80 = 80 5a2 = 80 Divide each side by '5'. a2 = 16 Simplifying a2 = 16 Take the square root of each side: a = {-4, 4}
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