35y^2+14y-4=

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Solution for 35y^2+14y-4= equation:


Simplifying
35y2 + 14y + -4 = 0

Reorder the terms:
-4 + 14y + 35y2 = 0

Solving
-4 + 14y + 35y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
35 the coefficient of the squared term: 

Divide each side by '35'.
-0.1142857143 + 0.4y + y2 = 0

Move the constant term to the right:

Add '0.1142857143' to each side of the equation.
-0.1142857143 + 0.4y + 0.1142857143 + y2 = 0 + 0.1142857143

Reorder the terms:
-0.1142857143 + 0.1142857143 + 0.4y + y2 = 0 + 0.1142857143

Combine like terms: -0.1142857143 + 0.1142857143 = 0.0000000000
0.0000000000 + 0.4y + y2 = 0 + 0.1142857143
0.4y + y2 = 0 + 0.1142857143

Combine like terms: 0 + 0.1142857143 = 0.1142857143
0.4y + y2 = 0.1142857143

The y term is 0.4y.  Take half its coefficient (0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
0.4y + 0.04 + y2 = 0.1142857143 + 0.04

Reorder the terms:
0.04 + 0.4y + y2 = 0.1142857143 + 0.04

Combine like terms: 0.1142857143 + 0.04 = 0.1542857143
0.04 + 0.4y + y2 = 0.1542857143

Factor a perfect square on the left side:
(y + 0.2)(y + 0.2) = 0.1542857143

Calculate the square root of the right side: 0.392792202

Break this problem into two subproblems by setting 
(y + 0.2) equal to 0.392792202 and -0.392792202.

Subproblem 1

y + 0.2 = 0.392792202 Simplifying y + 0.2 = 0.392792202 Reorder the terms: 0.2 + y = 0.392792202 Solving 0.2 + y = 0.392792202 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + y = 0.392792202 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + y = 0.392792202 + -0.2 y = 0.392792202 + -0.2 Combine like terms: 0.392792202 + -0.2 = 0.192792202 y = 0.192792202 Simplifying y = 0.192792202

Subproblem 2

y + 0.2 = -0.392792202 Simplifying y + 0.2 = -0.392792202 Reorder the terms: 0.2 + y = -0.392792202 Solving 0.2 + y = -0.392792202 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '-0.2' to each side of the equation. 0.2 + -0.2 + y = -0.392792202 + -0.2 Combine like terms: 0.2 + -0.2 = 0.0 0.0 + y = -0.392792202 + -0.2 y = -0.392792202 + -0.2 Combine like terms: -0.392792202 + -0.2 = -0.592792202 y = -0.592792202 Simplifying y = -0.592792202

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.192792202, -0.592792202}

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