5Y^2+10=20Y

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Solution for 5Y^2+10=20Y equation:


Simplifying
5Y2 + 10 = 20Y

Reorder the terms:
10 + 5Y2 = 20Y

Solving
10 + 5Y2 = 20Y

Solving for variable 'Y'.

Reorder the terms:
10 + -20Y + 5Y2 = 20Y + -20Y

Combine like terms: 20Y + -20Y = 0
10 + -20Y + 5Y2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(2 + -4Y + Y2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(2 + -4Y + Y2)' equal to zero and attempt to solve: Simplifying 2 + -4Y + Y2 = 0 Solving 2 + -4Y + Y2 = 0 Begin completing the square. Move the constant term to the right: Add '-2' to each side of the equation. 2 + -4Y + -2 + Y2 = 0 + -2 Reorder the terms: 2 + -2 + -4Y + Y2 = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -4Y + Y2 = 0 + -2 -4Y + Y2 = 0 + -2 Combine like terms: 0 + -2 = -2 -4Y + Y2 = -2 The Y term is -4Y. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4Y + 4 + Y2 = -2 + 4 Reorder the terms: 4 + -4Y + Y2 = -2 + 4 Combine like terms: -2 + 4 = 2 4 + -4Y + Y2 = 2 Factor a perfect square on the left side: (Y + -2)(Y + -2) = 2 Calculate the square root of the right side: 1.414213562 Break this problem into two subproblems by setting (Y + -2) equal to 1.414213562 and -1.414213562.

Subproblem 1

Y + -2 = 1.414213562 Simplifying Y + -2 = 1.414213562 Reorder the terms: -2 + Y = 1.414213562 Solving -2 + Y = 1.414213562 Solving for variable 'Y'. Move all terms containing Y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + Y = 1.414213562 + 2 Combine like terms: -2 + 2 = 0 0 + Y = 1.414213562 + 2 Y = 1.414213562 + 2 Combine like terms: 1.414213562 + 2 = 3.414213562 Y = 3.414213562 Simplifying Y = 3.414213562

Subproblem 2

Y + -2 = -1.414213562 Simplifying Y + -2 = -1.414213562 Reorder the terms: -2 + Y = -1.414213562 Solving -2 + Y = -1.414213562 Solving for variable 'Y'. Move all terms containing Y to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + Y = -1.414213562 + 2 Combine like terms: -2 + 2 = 0 0 + Y = -1.414213562 + 2 Y = -1.414213562 + 2 Combine like terms: -1.414213562 + 2 = 0.585786438 Y = 0.585786438 Simplifying Y = 0.585786438

Solution

The solution to the problem is based on the solutions from the subproblems. Y = {3.414213562, 0.585786438}

Solution

Y = {3.414213562, 0.585786438}

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