1600*y^2-19.62*y-29.43=0

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Solution for 1600*y^2-19.62*y-29.43=0 equation:


Simplifying
1600y2 + -19.62y + -29.43 = 0

Reorder the terms:
-29.43 + -19.62y + 1600y2 = 0

Solving
-29.43 + -19.62y + 1600y2 = 0

Solving for variable 'y'.

Begin completing the square.  Divide all terms by
1600 the coefficient of the squared term: 

Divide each side by '1600'.
-0.01839375 + -0.0122625y + y2 = 0

Move the constant term to the right:

Add '0.01839375' to each side of the equation.
-0.01839375 + -0.0122625y + 0.01839375 + y2 = 0 + 0.01839375

Reorder the terms:
-0.01839375 + 0.01839375 + -0.0122625y + y2 = 0 + 0.01839375

Combine like terms: -0.01839375 + 0.01839375 = 0.00000000
0.00000000 + -0.0122625y + y2 = 0 + 0.01839375
-0.0122625y + y2 = 0 + 0.01839375

Combine like terms: 0 + 0.01839375 = 0.01839375
-0.0122625y + y2 = 0.01839375

The y term is -0.0122625y.  Take half its coefficient (-0.00613125).
Square it (0.00003759222656) and add it to both sides.

Add '0.00003759222656' to each side of the equation.
-0.0122625y + 0.00003759222656 + y2 = 0.01839375 + 0.00003759222656

Reorder the terms:
0.00003759222656 + -0.0122625y + y2 = 0.01839375 + 0.00003759222656

Combine like terms: 0.01839375 + 0.00003759222656 = 0.01843134222656
0.00003759222656 + -0.0122625y + y2 = 0.01843134222656

Factor a perfect square on the left side:
(y + -0.00613125)(y + -0.00613125) = 0.01843134222656

Calculate the square root of the right side: 0.135762079

Break this problem into two subproblems by setting 
(y + -0.00613125) equal to 0.135762079 and -0.135762079.

Subproblem 1

y + -0.00613125 = 0.135762079 Simplifying y + -0.00613125 = 0.135762079 Reorder the terms: -0.00613125 + y = 0.135762079 Solving -0.00613125 + y = 0.135762079 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.00613125' to each side of the equation. -0.00613125 + 0.00613125 + y = 0.135762079 + 0.00613125 Combine like terms: -0.00613125 + 0.00613125 = 0.00000000 0.00000000 + y = 0.135762079 + 0.00613125 y = 0.135762079 + 0.00613125 Combine like terms: 0.135762079 + 0.00613125 = 0.141893329 y = 0.141893329 Simplifying y = 0.141893329

Subproblem 2

y + -0.00613125 = -0.135762079 Simplifying y + -0.00613125 = -0.135762079 Reorder the terms: -0.00613125 + y = -0.135762079 Solving -0.00613125 + y = -0.135762079 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.00613125' to each side of the equation. -0.00613125 + 0.00613125 + y = -0.135762079 + 0.00613125 Combine like terms: -0.00613125 + 0.00613125 = 0.00000000 0.00000000 + y = -0.135762079 + 0.00613125 y = -0.135762079 + 0.00613125 Combine like terms: -0.135762079 + 0.00613125 = -0.129630829 y = -0.129630829 Simplifying y = -0.129630829

Solution

The solution to the problem is based on the solutions from the subproblems. y = {0.141893329, -0.129630829}

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