9y-8=4y*7y+16

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Solution for 9y-8=4y*7y+16 equation:


Simplifying
9y + -8 = 4y * 7y + 16

Reorder the terms:
-8 + 9y = 4y * 7y + 16

Reorder the terms for easier multiplication:
-8 + 9y = 4 * 7y * y + 16

Multiply 4 * 7
-8 + 9y = 28y * y + 16

Multiply y * y
-8 + 9y = 28y2 + 16

Reorder the terms:
-8 + 9y = 16 + 28y2

Solving
-8 + 9y = 16 + 28y2

Solving for variable 'y'.

Reorder the terms:
-8 + -16 + 9y + -28y2 = 16 + 28y2 + -16 + -28y2

Combine like terms: -8 + -16 = -24
-24 + 9y + -28y2 = 16 + 28y2 + -16 + -28y2

Reorder the terms:
-24 + 9y + -28y2 = 16 + -16 + 28y2 + -28y2

Combine like terms: 16 + -16 = 0
-24 + 9y + -28y2 = 0 + 28y2 + -28y2
-24 + 9y + -28y2 = 28y2 + -28y2

Combine like terms: 28y2 + -28y2 = 0
-24 + 9y + -28y2 = 0

Begin completing the square.  Divide all terms by
-28 the coefficient of the squared term: 

Divide each side by '-28'.
0.8571428571 + -0.3214285714y + y2 = 0

Move the constant term to the right:

Add '-0.8571428571' to each side of the equation.
0.8571428571 + -0.3214285714y + -0.8571428571 + y2 = 0 + -0.8571428571

Reorder the terms:
0.8571428571 + -0.8571428571 + -0.3214285714y + y2 = 0 + -0.8571428571

Combine like terms: 0.8571428571 + -0.8571428571 = 0.0000000000
0.0000000000 + -0.3214285714y + y2 = 0 + -0.8571428571
-0.3214285714y + y2 = 0 + -0.8571428571

Combine like terms: 0 + -0.8571428571 = -0.8571428571
-0.3214285714y + y2 = -0.8571428571

The y term is -0.3214285714y.  Take half its coefficient (-0.1607142857).
Square it (0.02582908163) and add it to both sides.

Add '0.02582908163' to each side of the equation.
-0.3214285714y + 0.02582908163 + y2 = -0.8571428571 + 0.02582908163

Reorder the terms:
0.02582908163 + -0.3214285714y + y2 = -0.8571428571 + 0.02582908163

Combine like terms: -0.8571428571 + 0.02582908163 = -0.83131377547
0.02582908163 + -0.3214285714y + y2 = -0.83131377547

Factor a perfect square on the left side:
(y + -0.1607142857)(y + -0.1607142857) = -0.83131377547

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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