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Simplifying 25x2 + -1x + -16 = 0 Reorder the terms: -16 + -1x + 25x2 = 0 Solving -16 + -1x + 25x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 25 the coefficient of the squared term: Divide each side by '25'. -0.64 + -0.04x + x2 = 0 Move the constant term to the right: Add '0.64' to each side of the equation. -0.64 + -0.04x + 0.64 + x2 = 0 + 0.64 Reorder the terms: -0.64 + 0.64 + -0.04x + x2 = 0 + 0.64 Combine like terms: -0.64 + 0.64 = 0.00 0.00 + -0.04x + x2 = 0 + 0.64 -0.04x + x2 = 0 + 0.64 Combine like terms: 0 + 0.64 = 0.64 -0.04x + x2 = 0.64 The x term is -0.04x. Take half its coefficient (-0.02). Square it (0.0004) and add it to both sides. Add '0.0004' to each side of the equation. -0.04x + 0.0004 + x2 = 0.64 + 0.0004 Reorder the terms: 0.0004 + -0.04x + x2 = 0.64 + 0.0004 Combine like terms: 0.64 + 0.0004 = 0.6404 0.0004 + -0.04x + x2 = 0.6404 Factor a perfect square on the left side: (x + -0.02)(x + -0.02) = 0.6404 Calculate the square root of the right side: 0.800249961 Break this problem into two subproblems by setting (x + -0.02) equal to 0.800249961 and -0.800249961.Subproblem 1
x + -0.02 = 0.800249961 Simplifying x + -0.02 = 0.800249961 Reorder the terms: -0.02 + x = 0.800249961 Solving -0.02 + x = 0.800249961 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.02' to each side of the equation. -0.02 + 0.02 + x = 0.800249961 + 0.02 Combine like terms: -0.02 + 0.02 = 0.00 0.00 + x = 0.800249961 + 0.02 x = 0.800249961 + 0.02 Combine like terms: 0.800249961 + 0.02 = 0.820249961 x = 0.820249961 Simplifying x = 0.820249961Subproblem 2
x + -0.02 = -0.800249961 Simplifying x + -0.02 = -0.800249961 Reorder the terms: -0.02 + x = -0.800249961 Solving -0.02 + x = -0.800249961 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.02' to each side of the equation. -0.02 + 0.02 + x = -0.800249961 + 0.02 Combine like terms: -0.02 + 0.02 = 0.00 0.00 + x = -0.800249961 + 0.02 x = -0.800249961 + 0.02 Combine like terms: -0.800249961 + 0.02 = -0.780249961 x = -0.780249961 Simplifying x = -0.780249961Solution
The solution to the problem is based on the solutions from the subproblems. x = {0.820249961, -0.780249961}
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