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Simplifying 11x2 + 3 = 5(16x4 + -9) Reorder the terms: 3 + 11x2 = 5(16x4 + -9) Reorder the terms: 3 + 11x2 = 5(-9 + 16x4) 3 + 11x2 = (-9 * 5 + 16x4 * 5) 3 + 11x2 = (-45 + 80x4) Solving 3 + 11x2 = -45 + 80x4 Solving for variable 'x'. Reorder the terms: 3 + 45 + 11x2 + -80x4 = -45 + 80x4 + 45 + -80x4 Combine like terms: 3 + 45 = 48 48 + 11x2 + -80x4 = -45 + 80x4 + 45 + -80x4 Reorder the terms: 48 + 11x2 + -80x4 = -45 + 45 + 80x4 + -80x4 Combine like terms: -45 + 45 = 0 48 + 11x2 + -80x4 = 0 + 80x4 + -80x4 48 + 11x2 + -80x4 = 80x4 + -80x4 Combine like terms: 80x4 + -80x4 = 0 48 + 11x2 + -80x4 = 0 Begin completing the square. Divide all terms by -80 the coefficient of the squared term: Divide each side by '-80'. -0.6 + -0.1375x2 + x4 = 0 Move the constant term to the right: Add '0.6' to each side of the equation. -0.6 + -0.1375x2 + 0.6 + x4 = 0 + 0.6 Reorder the terms: -0.6 + 0.6 + -0.1375x2 + x4 = 0 + 0.6 Combine like terms: -0.6 + 0.6 = 0.0 0.0 + -0.1375x2 + x4 = 0 + 0.6 -0.1375x2 + x4 = 0 + 0.6 Combine like terms: 0 + 0.6 = 0.6 -0.1375x2 + x4 = 0.6 The x term is -0.1375x2. Take half its coefficient (-0.06875). Square it (0.0047265625) and add it to both sides. Add '0.0047265625' to each side of the equation. -0.1375x2 + 0.0047265625 + x4 = 0.6 + 0.0047265625 Reorder the terms: 0.0047265625 + -0.1375x2 + x4 = 0.6 + 0.0047265625 Combine like terms: 0.6 + 0.0047265625 = 0.6047265625 0.0047265625 + -0.1375x2 + x4 = 0.6047265625 Factor a perfect square on the left side: (x2 + -0.06875)(x2 + -0.06875) = 0.6047265625 Calculate the square root of the right side: 0.777641667 Break this problem into two subproblems by setting (x2 + -0.06875) equal to 0.777641667 and -0.777641667.Subproblem 1
x2 + -0.06875 = 0.777641667 Simplifying x2 + -0.06875 = 0.777641667 Reorder the terms: -0.06875 + x2 = 0.777641667 Solving -0.06875 + x2 = 0.777641667 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.06875' to each side of the equation. -0.06875 + 0.06875 + x2 = 0.777641667 + 0.06875 Combine like terms: -0.06875 + 0.06875 = 0.00000 0.00000 + x2 = 0.777641667 + 0.06875 x2 = 0.777641667 + 0.06875 Combine like terms: 0.777641667 + 0.06875 = 0.846391667 x2 = 0.846391667 Simplifying x2 = 0.846391667 Take the square root of each side: x = {-0.919995471, 0.919995471}Subproblem 2
x2 + -0.06875 = -0.777641667 Simplifying x2 + -0.06875 = -0.777641667 Reorder the terms: -0.06875 + x2 = -0.777641667 Solving -0.06875 + x2 = -0.777641667 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.06875' to each side of the equation. -0.06875 + 0.06875 + x2 = -0.777641667 + 0.06875 Combine like terms: -0.06875 + 0.06875 = 0.00000 0.00000 + x2 = -0.777641667 + 0.06875 x2 = -0.777641667 + 0.06875 Combine like terms: -0.777641667 + 0.06875 = -0.708891667 x2 = -0.708891667 Simplifying x2 = -0.708891667 Reorder the terms: 0.708891667 + x2 = -0.708891667 + 0.708891667 Combine like terms: -0.708891667 + 0.708891667 = 0.000000000 0.708891667 + x2 = 0.000000000 The solution to this equation could not be determined.This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.
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