3y^2-(5y+y^2)-(3y-4)=

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Solution for 3y^2-(5y+y^2)-(3y-4)= equation:


Simplifying
3y2 + -1(5y + y2) + -1(3y + -4) = 0
3y2 + (5y * -1 + y2 * -1) + -1(3y + -4) = 0
3y2 + (-5y + -1y2) + -1(3y + -4) = 0

Reorder the terms:
3y2 + -5y + -1y2 + -1(-4 + 3y) = 0
3y2 + -5y + -1y2 + (-4 * -1 + 3y * -1) = 0
3y2 + -5y + -1y2 + (4 + -3y) = 0

Reorder the terms:
4 + -5y + -3y + 3y2 + -1y2 = 0

Combine like terms: -5y + -3y = -8y
4 + -8y + 3y2 + -1y2 = 0

Combine like terms: 3y2 + -1y2 = 2y2
4 + -8y + 2y2 = 0

Solving
4 + -8y + 2y2 = 0

Solving for variable 'y'.

Factor out the Greatest Common Factor (GCF), '2'.
2(2 + -4y + y2) = 0

Ignore the factor 2.

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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