8(7y^2-5y+6)-3(5y^2-9y+7)=

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Solution for 8(7y^2-5y+6)-3(5y^2-9y+7)= equation:


Simplifying
8(7y2 + -5y + 6) + -3(5y2 + -9y + 7) = 0

Reorder the terms:
8(6 + -5y + 7y2) + -3(5y2 + -9y + 7) = 0
(6 * 8 + -5y * 8 + 7y2 * 8) + -3(5y2 + -9y + 7) = 0
(48 + -40y + 56y2) + -3(5y2 + -9y + 7) = 0

Reorder the terms:
48 + -40y + 56y2 + -3(7 + -9y + 5y2) = 0
48 + -40y + 56y2 + (7 * -3 + -9y * -3 + 5y2 * -3) = 0
48 + -40y + 56y2 + (-21 + 27y + -15y2) = 0

Reorder the terms:
48 + -21 + -40y + 27y + 56y2 + -15y2 = 0

Combine like terms: 48 + -21 = 27
27 + -40y + 27y + 56y2 + -15y2 = 0

Combine like terms: -40y + 27y = -13y
27 + -13y + 56y2 + -15y2 = 0

Combine like terms: 56y2 + -15y2 = 41y2
27 + -13y + 41y2 = 0

Solving
27 + -13y + 41y2 = 0

Solving for variable 'y'.

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

Divide each side by '41'.
0.6585365854 + -0.3170731707y + y2 = 0

Move the constant term to the right:

Add '-0.6585365854' to each side of the equation.
0.6585365854 + -0.3170731707y + -0.6585365854 + y2 = 0 + -0.6585365854

Reorder the terms:
0.6585365854 + -0.6585365854 + -0.3170731707y + y2 = 0 + -0.6585365854

Combine like terms: 0.6585365854 + -0.6585365854 = 0.0000000000
0.0000000000 + -0.3170731707y + y2 = 0 + -0.6585365854
-0.3170731707y + y2 = 0 + -0.6585365854

Combine like terms: 0 + -0.6585365854 = -0.6585365854
-0.3170731707y + y2 = -0.6585365854

The y term is -0.3170731707y.  Take half its coefficient (-0.1585365854).
Square it (0.02513384891) and add it to both sides.

Add '0.02513384891' to each side of the equation.
-0.3170731707y + 0.02513384891 + y2 = -0.6585365854 + 0.02513384891

Reorder the terms:
0.02513384891 + -0.3170731707y + y2 = -0.6585365854 + 0.02513384891

Combine like terms: -0.6585365854 + 0.02513384891 = -0.63340273649
0.02513384891 + -0.3170731707y + y2 = -0.63340273649

Factor a perfect square on the left side:
(y + -0.1585365854)(y + -0.1585365854) = -0.63340273649

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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