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Simplifying -6(6y + 4) * 7y = -8 Reorder the terms: -6(4 + 6y) * 7y = -8 Reorder the terms for easier multiplication: -6 * 7y(4 + 6y) = -8 Multiply -6 * 7 -42y(4 + 6y) = -8 (4 * -42y + 6y * -42y) = -8 (-168y + -252y2) = -8 Solving -168y + -252y2 = -8 Solving for variable 'y'. Reorder the terms: 8 + -168y + -252y2 = -8 + 8 Combine like terms: -8 + 8 = 0 8 + -168y + -252y2 = 0 Factor out the Greatest Common Factor (GCF), '4'. 4(2 + -42y + -63y2) = 0 Ignore the factor 4.Subproblem 1
Set the factor '(2 + -42y + -63y2)' equal to zero and attempt to solve: Simplifying 2 + -42y + -63y2 = 0 Solving 2 + -42y + -63y2 = 0 Begin completing the square. Divide all terms by -63 the coefficient of the squared term: Divide each side by '-63'. -0.03174603175 + 0.6666666667y + y2 = 0 Move the constant term to the right: Add '0.03174603175' to each side of the equation. -0.03174603175 + 0.6666666667y + 0.03174603175 + y2 = 0 + 0.03174603175 Reorder the terms: -0.03174603175 + 0.03174603175 + 0.6666666667y + y2 = 0 + 0.03174603175 Combine like terms: -0.03174603175 + 0.03174603175 = 0.00000000000 0.00000000000 + 0.6666666667y + y2 = 0 + 0.03174603175 0.6666666667y + y2 = 0 + 0.03174603175 Combine like terms: 0 + 0.03174603175 = 0.03174603175 0.6666666667y + y2 = 0.03174603175 The y term is 0.6666666667y. Take half its coefficient (0.3333333334). Square it (0.1111111112) and add it to both sides. Add '0.1111111112' to each side of the equation. 0.6666666667y + 0.1111111112 + y2 = 0.03174603175 + 0.1111111112 Reorder the terms: 0.1111111112 + 0.6666666667y + y2 = 0.03174603175 + 0.1111111112 Combine like terms: 0.03174603175 + 0.1111111112 = 0.14285714295 0.1111111112 + 0.6666666667y + y2 = 0.14285714295 Factor a perfect square on the left side: (y + 0.3333333334)(y + 0.3333333334) = 0.14285714295 Calculate the square root of the right side: 0.377964473 Break this problem into two subproblems by setting (y + 0.3333333334) equal to 0.377964473 and -0.377964473.Subproblem 1
y + 0.3333333334 = 0.377964473 Simplifying y + 0.3333333334 = 0.377964473 Reorder the terms: 0.3333333334 + y = 0.377964473 Solving 0.3333333334 + y = 0.377964473 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + y = 0.377964473 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + y = 0.377964473 + -0.3333333334 y = 0.377964473 + -0.3333333334 Combine like terms: 0.377964473 + -0.3333333334 = 0.0446311396 y = 0.0446311396 Simplifying y = 0.0446311396Subproblem 2
y + 0.3333333334 = -0.377964473 Simplifying y + 0.3333333334 = -0.377964473 Reorder the terms: 0.3333333334 + y = -0.377964473 Solving 0.3333333334 + y = -0.377964473 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + y = -0.377964473 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + y = -0.377964473 + -0.3333333334 y = -0.377964473 + -0.3333333334 Combine like terms: -0.377964473 + -0.3333333334 = -0.7112978064 y = -0.7112978064 Simplifying y = -0.7112978064Solution
The solution to the problem is based on the solutions from the subproblems. y = {0.0446311396, -0.7112978064}Solution
y = {0.0446311396, -0.7112978064}
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