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Simplifying (x2 + -9y2) + -1(3x + -9y) = 0 Remove parenthesis around (x2 + -9y2) x2 + -9y2 + -1(3x + -9y) = 0 x2 + -9y2 + (3x * -1 + -9y * -1) = 0 x2 + -9y2 + (-3x + 9y) = 0 Reorder the terms: -3x + x2 + 9y + -9y2 = 0 Solving -3x + x2 + 9y + -9y2 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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