-(-4z^2+z-5)=

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Solution for -(-4z^2+z-5)= equation:


Simplifying
-1(-4z2 + z + -5) = 0

Reorder the terms:
-1(-5 + z + -4z2) = 0
(-5 * -1 + z * -1 + -4z2 * -1) = 0
(5 + -1z + 4z2) = 0

Solving
5 + -1z + 4z2 = 0

Solving for variable 'z'.

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

Divide each side by '4'.
1.25 + -0.25z + z2 = 0

Move the constant term to the right:

Add '-1.25' to each side of the equation.
1.25 + -0.25z + -1.25 + z2 = 0 + -1.25

Reorder the terms:
1.25 + -1.25 + -0.25z + z2 = 0 + -1.25

Combine like terms: 1.25 + -1.25 = 0.00
0.00 + -0.25z + z2 = 0 + -1.25
-0.25z + z2 = 0 + -1.25

Combine like terms: 0 + -1.25 = -1.25
-0.25z + z2 = -1.25

The z term is -0.25z.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25z + 0.015625 + z2 = -1.25 + 0.015625

Reorder the terms:
0.015625 + -0.25z + z2 = -1.25 + 0.015625

Combine like terms: -1.25 + 0.015625 = -1.234375
0.015625 + -0.25z + z2 = -1.234375

Factor a perfect square on the left side:
(z + -0.125)(z + -0.125) = -1.234375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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