2(5+z)+3z+3z^2=

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Solution for 2(5+z)+3z+3z^2= equation:


Simplifying
2(5 + z) + 3z + 3z2 = 0
(5 * 2 + z * 2) + 3z + 3z2 = 0
(10 + 2z) + 3z + 3z2 = 0

Combine like terms: 2z + 3z = 5z
10 + 5z + 3z2 = 0

Solving
10 + 5z + 3z2 = 0

Solving for variable 'z'.

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

Divide each side by '3'.
3.333333333 + 1.666666667z + z2 = 0

Move the constant term to the right:

Add '-3.333333333' to each side of the equation.
3.333333333 + 1.666666667z + -3.333333333 + z2 = 0 + -3.333333333

Reorder the terms:
3.333333333 + -3.333333333 + 1.666666667z + z2 = 0 + -3.333333333

Combine like terms: 3.333333333 + -3.333333333 = 0.000000000
0.000000000 + 1.666666667z + z2 = 0 + -3.333333333
1.666666667z + z2 = 0 + -3.333333333

Combine like terms: 0 + -3.333333333 = -3.333333333
1.666666667z + z2 = -3.333333333

The z term is 1.666666667z.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667z + 0.6944444447 + z2 = -3.333333333 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667z + z2 = -3.333333333 + 0.6944444447

Combine like terms: -3.333333333 + 0.6944444447 = -2.6388888883
0.6944444447 + 1.666666667z + z2 = -2.6388888883

Factor a perfect square on the left side:
(z + 0.8333333335)(z + 0.8333333335) = -2.6388888883

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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