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Simplifying 13y + -1y2 = 25 Solving 13y + -1y2 = 25 Solving for variable 'y'. Reorder the terms: -25 + 13y + -1y2 = 25 + -25 Combine like terms: 25 + -25 = 0 -25 + 13y + -1y2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 25 + -13y + y2 = 0 Move the constant term to the right: Add '-25' to each side of the equation. 25 + -13y + -25 + y2 = 0 + -25 Reorder the terms: 25 + -25 + -13y + y2 = 0 + -25 Combine like terms: 25 + -25 = 0 0 + -13y + y2 = 0 + -25 -13y + y2 = 0 + -25 Combine like terms: 0 + -25 = -25 -13y + y2 = -25 The y term is -13y. Take half its coefficient (-6.5). Square it (42.25) and add it to both sides. Add '42.25' to each side of the equation. -13y + 42.25 + y2 = -25 + 42.25 Reorder the terms: 42.25 + -13y + y2 = -25 + 42.25 Combine like terms: -25 + 42.25 = 17.25 42.25 + -13y + y2 = 17.25 Factor a perfect square on the left side: (y + -6.5)(y + -6.5) = 17.25 Calculate the square root of the right side: 4.153311931 Break this problem into two subproblems by setting (y + -6.5) equal to 4.153311931 and -4.153311931.Subproblem 1
y + -6.5 = 4.153311931 Simplifying y + -6.5 = 4.153311931 Reorder the terms: -6.5 + y = 4.153311931 Solving -6.5 + y = 4.153311931 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + y = 4.153311931 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + y = 4.153311931 + 6.5 y = 4.153311931 + 6.5 Combine like terms: 4.153311931 + 6.5 = 10.653311931 y = 10.653311931 Simplifying y = 10.653311931Subproblem 2
y + -6.5 = -4.153311931 Simplifying y + -6.5 = -4.153311931 Reorder the terms: -6.5 + y = -4.153311931 Solving -6.5 + y = -4.153311931 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + y = -4.153311931 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + y = -4.153311931 + 6.5 y = -4.153311931 + 6.5 Combine like terms: -4.153311931 + 6.5 = 2.346688069 y = 2.346688069 Simplifying y = 2.346688069Solution
The solution to the problem is based on the solutions from the subproblems. y = {10.653311931, 2.346688069}
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