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Simplifying -4.9x2 + 9.8x + 0 = 3.675 Reorder the terms: 0 + 9.8x + -4.9x2 = 3.675 Remove the zero: 9.8x + -4.9x2 = 3.675 Solving 9.8x + -4.9x2 = 3.675 Solving for variable 'x'. Reorder the terms: -3.675 + 9.8x + -4.9x2 = 3.675 + -3.675 Combine like terms: 3.675 + -3.675 = 0.000 -3.675 + 9.8x + -4.9x2 = 0.000 Begin completing the square. Divide all terms by -4.9 the coefficient of the squared term: Divide each side by '-4.9'. 0.75 + -2x + x2 = 0.00 Move the constant term to the right: Add '-0.75' to each side of the equation. 0.75 + -2x + -0.75 + x2 = 0.00 + -0.75 Reorder the terms: 0.75 + -0.75 + -2x + x2 = 0.00 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + -2x + x2 = 0.00 + -0.75 -2x + x2 = 0.00 + -0.75 Combine like terms: 0.00 + -0.75 = -0.75 -2x + x2 = -0.75 The x term is -2x. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2x + 1 + x2 = -0.75 + 1 Reorder the terms: 1 + -2x + x2 = -0.75 + 1 Combine like terms: -0.75 + 1 = 0.25 1 + -2x + x2 = 0.25 Factor a perfect square on the left side: (x + -1)(x + -1) = 0.25 Calculate the square root of the right side: 0.5 Break this problem into two subproblems by setting (x + -1) equal to 0.5 and -0.5.Subproblem 1
x + -1 = 0.5 Simplifying x + -1 = 0.5 Reorder the terms: -1 + x = 0.5 Solving -1 + x = 0.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.5 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.5 + 1 x = 0.5 + 1 Combine like terms: 0.5 + 1 = 1.5 x = 1.5 Simplifying x = 1.5Subproblem 2
x + -1 = -0.5 Simplifying x + -1 = -0.5 Reorder the terms: -1 + x = -0.5 Solving -1 + x = -0.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.5 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.5 + 1 x = -0.5 + 1 Combine like terms: -0.5 + 1 = 0.5 x = 0.5 Simplifying x = 0.5Solution
The solution to the problem is based on the solutions from the subproblems. x = {1.5, 0.5}
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