2y^2-7y+140=0

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Solution for 2y^2-7y+140=0 equation:


Simplifying
2y2 + -7y + 140 = 0

Reorder the terms:
140 + -7y + 2y2 = 0

Solving
140 + -7y + 2y2 = 0

Solving for variable 'y'.

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

Divide each side by '2'.
70 + -3.5y + y2 = 0

Move the constant term to the right:

Add '-70' to each side of the equation.
70 + -3.5y + -70 + y2 = 0 + -70

Reorder the terms:
70 + -70 + -3.5y + y2 = 0 + -70

Combine like terms: 70 + -70 = 0
0 + -3.5y + y2 = 0 + -70
-3.5y + y2 = 0 + -70

Combine like terms: 0 + -70 = -70
-3.5y + y2 = -70

The y term is -3.5y.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5y + 3.0625 + y2 = -70 + 3.0625

Reorder the terms:
3.0625 + -3.5y + y2 = -70 + 3.0625

Combine like terms: -70 + 3.0625 = -66.9375
3.0625 + -3.5y + y2 = -66.9375

Factor a perfect square on the left side:
(y + -1.75)(y + -1.75) = -66.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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