4y^2-7y+15=0

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Solution for 4y^2-7y+15=0 equation:


Simplifying
4y2 + -7y + 15 = 0

Reorder the terms:
15 + -7y + 4y2 = 0

Solving
15 + -7y + 4y2 = 0

Solving for variable 'y'.

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

Divide each side by '4'.
3.75 + -1.75y + y2 = 0

Move the constant term to the right:

Add '-3.75' to each side of the equation.
3.75 + -1.75y + -3.75 + y2 = 0 + -3.75

Reorder the terms:
3.75 + -3.75 + -1.75y + y2 = 0 + -3.75

Combine like terms: 3.75 + -3.75 = 0.00
0.00 + -1.75y + y2 = 0 + -3.75
-1.75y + y2 = 0 + -3.75

Combine like terms: 0 + -3.75 = -3.75
-1.75y + y2 = -3.75

The y term is -1.75y.  Take half its coefficient (-0.875).
Square it (0.765625) and add it to both sides.

Add '0.765625' to each side of the equation.
-1.75y + 0.765625 + y2 = -3.75 + 0.765625

Reorder the terms:
0.765625 + -1.75y + y2 = -3.75 + 0.765625

Combine like terms: -3.75 + 0.765625 = -2.984375
0.765625 + -1.75y + y2 = -2.984375

Factor a perfect square on the left side:
(y + -0.875)(y + -0.875) = -2.984375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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