320y^2-605y+279=0

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Solution for 320y^2-605y+279=0 equation:


Simplifying
320y2 + -605y + 279 = 0

Reorder the terms:
279 + -605y + 320y2 = 0

Solving
279 + -605y + 320y2 = 0

Solving for variable 'y'.

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

Divide each side by '320'.
0.871875 + -1.890625y + y2 = 0

Move the constant term to the right:

Add '-0.871875' to each side of the equation.
0.871875 + -1.890625y + -0.871875 + y2 = 0 + -0.871875

Reorder the terms:
0.871875 + -0.871875 + -1.890625y + y2 = 0 + -0.871875

Combine like terms: 0.871875 + -0.871875 = 0.000000
0.000000 + -1.890625y + y2 = 0 + -0.871875
-1.890625y + y2 = 0 + -0.871875

Combine like terms: 0 + -0.871875 = -0.871875
-1.890625y + y2 = -0.871875

The y term is -1.890625y.  Take half its coefficient (-0.9453125).
Square it (0.8936157227) and add it to both sides.

Add '0.8936157227' to each side of the equation.
-1.890625y + 0.8936157227 + y2 = -0.871875 + 0.8936157227

Reorder the terms:
0.8936157227 + -1.890625y + y2 = -0.871875 + 0.8936157227

Combine like terms: -0.871875 + 0.8936157227 = 0.0217407227
0.8936157227 + -1.890625y + y2 = 0.0217407227

Factor a perfect square on the left side:
(y + -0.9453125)(y + -0.9453125) = 0.0217407227

Calculate the square root of the right side: 0.147447356

Break this problem into two subproblems by setting 
(y + -0.9453125) equal to 0.147447356 and -0.147447356.

Subproblem 1

y + -0.9453125 = 0.147447356 Simplifying y + -0.9453125 = 0.147447356 Reorder the terms: -0.9453125 + y = 0.147447356 Solving -0.9453125 + y = 0.147447356 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.9453125' to each side of the equation. -0.9453125 + 0.9453125 + y = 0.147447356 + 0.9453125 Combine like terms: -0.9453125 + 0.9453125 = 0.0000000 0.0000000 + y = 0.147447356 + 0.9453125 y = 0.147447356 + 0.9453125 Combine like terms: 0.147447356 + 0.9453125 = 1.092759856 y = 1.092759856 Simplifying y = 1.092759856

Subproblem 2

y + -0.9453125 = -0.147447356 Simplifying y + -0.9453125 = -0.147447356 Reorder the terms: -0.9453125 + y = -0.147447356 Solving -0.9453125 + y = -0.147447356 Solving for variable 'y'. Move all terms containing y to the left, all other terms to the right. Add '0.9453125' to each side of the equation. -0.9453125 + 0.9453125 + y = -0.147447356 + 0.9453125 Combine like terms: -0.9453125 + 0.9453125 = 0.0000000 0.0000000 + y = -0.147447356 + 0.9453125 y = -0.147447356 + 0.9453125 Combine like terms: -0.147447356 + 0.9453125 = 0.797865144 y = 0.797865144 Simplifying y = 0.797865144

Solution

The solution to the problem is based on the solutions from the subproblems. y = {1.092759856, 0.797865144}

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