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Simplifying (9x2 + -7)(9x2 + 7) = 0 Reorder the terms: (-7 + 9x2)(9x2 + 7) = 0 Reorder the terms: (-7 + 9x2)(7 + 9x2) = 0 Multiply (-7 + 9x2) * (7 + 9x2) (-7(7 + 9x2) + 9x2 * (7 + 9x2)) = 0 ((7 * -7 + 9x2 * -7) + 9x2 * (7 + 9x2)) = 0 ((-49 + -63x2) + 9x2 * (7 + 9x2)) = 0 (-49 + -63x2 + (7 * 9x2 + 9x2 * 9x2)) = 0 (-49 + -63x2 + (63x2 + 81x4)) = 0 Combine like terms: -63x2 + 63x2 = 0 (-49 + 0 + 81x4) = 0 (-49 + 81x4) = 0 Solving -49 + 81x4 = 0 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '49' to each side of the equation. -49 + 49 + 81x4 = 0 + 49 Combine like terms: -49 + 49 = 0 0 + 81x4 = 0 + 49 81x4 = 0 + 49 Combine like terms: 0 + 49 = 49 81x4 = 49 Divide each side by '81'. x4 = 0.6049382716 Simplifying x4 = 0.6049382716 Reorder the terms: -0.6049382716 + x4 = 0.6049382716 + -0.6049382716 Combine like terms: 0.6049382716 + -0.6049382716 = 0.0000000000 -0.6049382716 + x4 = 0.0000000000 The solution to this equation could not be determined.
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