(5y^2-7y+3)+(-2y^2+4y+1)=

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Solution for (5y^2-7y+3)+(-2y^2+4y+1)= equation:


Simplifying
(5y2 + -7y + 3) + (-2y2 + 4y + 1) = 0

Reorder the terms:
(3 + -7y + 5y2) + (-2y2 + 4y + 1) = 0

Remove parenthesis around (3 + -7y + 5y2)
3 + -7y + 5y2 + (-2y2 + 4y + 1) = 0

Reorder the terms:
3 + -7y + 5y2 + (1 + 4y + -2y2) = 0

Remove parenthesis around (1 + 4y + -2y2)
3 + -7y + 5y2 + 1 + 4y + -2y2 = 0

Reorder the terms:
3 + 1 + -7y + 4y + 5y2 + -2y2 = 0

Combine like terms: 3 + 1 = 4
4 + -7y + 4y + 5y2 + -2y2 = 0

Combine like terms: -7y + 4y = -3y
4 + -3y + 5y2 + -2y2 = 0

Combine like terms: 5y2 + -2y2 = 3y2
4 + -3y + 3y2 = 0

Solving
4 + -3y + 3y2 = 0

Solving for variable 'y'.

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

Divide each side by '3'.
1.333333333 + -1y + y2 = 0

Move the constant term to the right:

Add '-1.333333333' to each side of the equation.
1.333333333 + -1y + -1.333333333 + y2 = 0 + -1.333333333

Reorder the terms:
1.333333333 + -1.333333333 + -1y + y2 = 0 + -1.333333333

Combine like terms: 1.333333333 + -1.333333333 = 0.000000000
0.000000000 + -1y + y2 = 0 + -1.333333333
-1y + y2 = 0 + -1.333333333

Combine like terms: 0 + -1.333333333 = -1.333333333
-1y + y2 = -1.333333333

The y term is -1y.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1y + 0.25 + y2 = -1.333333333 + 0.25

Reorder the terms:
0.25 + -1y + y2 = -1.333333333 + 0.25

Combine like terms: -1.333333333 + 0.25 = -1.083333333
0.25 + -1y + y2 = -1.083333333

Factor a perfect square on the left side:
(y + -0.5)(y + -0.5) = -1.083333333

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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