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Simplifying ax2 + 3x + -9 = 0 Reorder the terms: -9 + ax2 + 3x = 0 Solving -9 + ax2 + 3x = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '9' to each side of the equation. -9 + ax2 + 9 + 3x = 0 + 9 Reorder the terms: -9 + 9 + ax2 + 3x = 0 + 9 Combine like terms: -9 + 9 = 0 0 + ax2 + 3x = 0 + 9 ax2 + 3x = 0 + 9 Combine like terms: 0 + 9 = 9 ax2 + 3x = 9 Add '-3x' to each side of the equation. ax2 + 3x + -3x = 9 + -3x Combine like terms: 3x + -3x = 0 ax2 + 0 = 9 + -3x ax2 = 9 + -3x Divide each side by 'x2'. a = 9x-2 + -3x-1 Simplifying a = 9x-2 + -3x-1
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