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Simplifying (x2 + 7x + -4)(x2 + 7x + -9) = 0 Reorder the terms: (-4 + 7x + x2)(x2 + 7x + -9) = 0 Reorder the terms: (-4 + 7x + x2)(-9 + 7x + x2) = 0 Multiply (-4 + 7x + x2) * (-9 + 7x + x2) (-4(-9 + 7x + x2) + 7x * (-9 + 7x + x2) + x2(-9 + 7x + x2)) = 0 ((-9 * -4 + 7x * -4 + x2 * -4) + 7x * (-9 + 7x + x2) + x2(-9 + 7x + x2)) = 0 ((36 + -28x + -4x2) + 7x * (-9 + 7x + x2) + x2(-9 + 7x + x2)) = 0 (36 + -28x + -4x2 + (-9 * 7x + 7x * 7x + x2 * 7x) + x2(-9 + 7x + x2)) = 0 (36 + -28x + -4x2 + (-63x + 49x2 + 7x3) + x2(-9 + 7x + x2)) = 0 (36 + -28x + -4x2 + -63x + 49x2 + 7x3 + (-9 * x2 + 7x * x2 + x2 * x2)) = 0 (36 + -28x + -4x2 + -63x + 49x2 + 7x3 + (-9x2 + 7x3 + x4)) = 0 Reorder the terms: (36 + -28x + -63x + -4x2 + 49x2 + -9x2 + 7x3 + 7x3 + x4) = 0 Combine like terms: -28x + -63x = -91x (36 + -91x + -4x2 + 49x2 + -9x2 + 7x3 + 7x3 + x4) = 0 Combine like terms: -4x2 + 49x2 = 45x2 (36 + -91x + 45x2 + -9x2 + 7x3 + 7x3 + x4) = 0 Combine like terms: 45x2 + -9x2 = 36x2 (36 + -91x + 36x2 + 7x3 + 7x3 + x4) = 0 Combine like terms: 7x3 + 7x3 = 14x3 (36 + -91x + 36x2 + 14x3 + x4) = 0 Solving 36 + -91x + 36x2 + 14x3 + x4 = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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