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Simplifying (5y2 + 7y + -8) + (3y2 + -5y + -4) = 0 Reorder the terms: (-8 + 7y + 5y2) + (3y2 + -5y + -4) = 0 Remove parenthesis around (-8 + 7y + 5y2) -8 + 7y + 5y2 + (3y2 + -5y + -4) = 0 Reorder the terms: -8 + 7y + 5y2 + (-4 + -5y + 3y2) = 0 Remove parenthesis around (-4 + -5y + 3y2) -8 + 7y + 5y2 + -4 + -5y + 3y2 = 0 Reorder the terms: -8 + -4 + 7y + -5y + 5y2 + 3y2 = 0 Combine like terms: -8 + -4 = -12 -12 + 7y + -5y + 5y2 + 3y2 = 0 Combine like terms: 7y + -5y = 2y -12 + 2y + 5y2 + 3y2 = 0 Combine like terms: 5y2 + 3y2 = 8y2 -12 + 2y + 8y2 = 0 Solving -12 + 2y + 8y2 = 0 Solving for variable 'y'. Factor out the Greatest Common Factor (GCF), '2'. 2(-6 + y + 4y2) = 0 Ignore the factor 2.Subproblem 1
Set the factor '(-6 + y + 4y2)' equal to zero and attempt to solve: Simplifying -6 + y + 4y2 = 0 Solving -6 + y + 4y2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. -1.5 + 0.25y + y2 = 0 Move the constant term to the right: Add '1.5' to each side of the equation. -1.5 + 0.25y + 1.5 + y2 = 0 + 1.5 Reorder the terms: -1.5 + 1.5 + 0.25y + y2 = 0 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + 0.25y + y2 = 0 + 1.5 0.25y + y2 = 0 + 1.5 Combine like terms: 0 + 1.5 = 1.5 0.25y + y2 = 1.5 The y term is y. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.25y + 0.25 + y2 = 1.5 + 0.25 Reorder the terms: 0.25 + 0.25y + y2 = 1.5 + 0.25 Combine like terms: 1.5 + 0.25 = 1.75 0.25 + 0.25y + y2 = 1.75 Factor a perfect square on the left side: (y + 0.5)(y + 0.5) = 1.75 Calculate the square root of the right side: 1.322875656 Break this problem into two subproblems by setting (y + 0.5) equal to 1.322875656 and -1.322875656.Subproblem 1
y + 0.5 = 1.322875656 Simplifying y + 0.5 = 1.322875656 Reorder the terms: 0.5 + y = 1.322875656 Solving 0.5 + y = 1.322875656 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = 1.322875656 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = 1.322875656 + -0.5 y = 1.322875656 + -0.5 Combine like terms: 1.322875656 + -0.5 = 0.822875656 y = 0.822875656 Simplifying y = 0.822875656Subproblem 2
y + 0.5 = -1.322875656 Simplifying y + 0.5 = -1.322875656 Reorder the terms: 0.5 + y = -1.322875656 Solving 0.5 + y = -1.322875656 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + y = -1.322875656 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + y = -1.322875656 + -0.5 y = -1.322875656 + -0.5 Combine like terms: -1.322875656 + -0.5 = -1.822875656 y = -1.822875656 Simplifying y = -1.822875656Solution
The solution to the problem is based on the solutions from the subproblems. y = {0.822875656, -1.822875656}Solution
y = {0.822875656, -1.822875656}
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