16+4y+y^2=9

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Solution for 16+4y+y^2=9 equation:


Simplifying
16 + 4y + y2 = 9

Solving
16 + 4y + y2 = 9

Solving for variable 'y'.

Reorder the terms:
16 + -9 + 4y + y2 = 9 + -9

Combine like terms: 16 + -9 = 7
7 + 4y + y2 = 9 + -9

Combine like terms: 9 + -9 = 0
7 + 4y + y2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + 4y + -7 + y2 = 0 + -7

Reorder the terms:
7 + -7 + 4y + y2 = 0 + -7

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

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

The y term is 4y.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4y + 4 + y2 = -7 + 4

Reorder the terms:
4 + 4y + y2 = -7 + 4

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

Factor a perfect square on the left side:
(y + 2)(y + 2) = -3

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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