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Simplifying (x + -3y)(x + 3y) = 36 Multiply (x + -3y) * (x + 3y) (x(x + 3y) + -3y * (x + 3y)) = 36 ((x * x + 3y * x) + -3y * (x + 3y)) = 36 Reorder the terms: ((3xy + x2) + -3y * (x + 3y)) = 36 ((3xy + x2) + -3y * (x + 3y)) = 36 (3xy + x2 + (x * -3y + 3y * -3y)) = 36 (3xy + x2 + (-3xy + -9y2)) = 36 Reorder the terms: (3xy + -3xy + x2 + -9y2) = 36 Combine like terms: 3xy + -3xy = 0 (0 + x2 + -9y2) = 36 (x2 + -9y2) = 36 Solving x2 + -9y2 = 36 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9y2' to each side of the equation. x2 + -9y2 + 9y2 = 36 + 9y2 Combine like terms: -9y2 + 9y2 = 0 x2 + 0 = 36 + 9y2 x2 = 36 + 9y2 Simplifying x2 = 36 + 9y2 Reorder the terms: -36 + x2 + -9y2 = 36 + 9y2 + -36 + -9y2 Reorder the terms: -36 + x2 + -9y2 = 36 + -36 + 9y2 + -9y2 Combine like terms: 36 + -36 = 0 -36 + x2 + -9y2 = 0 + 9y2 + -9y2 -36 + x2 + -9y2 = 9y2 + -9y2 Combine like terms: 9y2 + -9y2 = 0 -36 + x2 + -9y2 = 0 The solution to this equation could not be determined.
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