12z=7z^2+20

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Solution for 12z=7z^2+20 equation:


Simplifying
12z = 7z2 + 20

Reorder the terms:
12z = 20 + 7z2

Solving
12z = 20 + 7z2

Solving for variable 'z'.

Reorder the terms:
-20 + 12z + -7z2 = 20 + 7z2 + -20 + -7z2

Reorder the terms:
-20 + 12z + -7z2 = 20 + -20 + 7z2 + -7z2

Combine like terms: 20 + -20 = 0
-20 + 12z + -7z2 = 0 + 7z2 + -7z2
-20 + 12z + -7z2 = 7z2 + -7z2

Combine like terms: 7z2 + -7z2 = 0
-20 + 12z + -7z2 = 0

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
2.857142857 + -1.714285714z + z2 = 0

Move the constant term to the right:

Add '-2.857142857' to each side of the equation.
2.857142857 + -1.714285714z + -2.857142857 + z2 = 0 + -2.857142857

Reorder the terms:
2.857142857 + -2.857142857 + -1.714285714z + z2 = 0 + -2.857142857

Combine like terms: 2.857142857 + -2.857142857 = 0.000000000
0.000000000 + -1.714285714z + z2 = 0 + -2.857142857
-1.714285714z + z2 = 0 + -2.857142857

Combine like terms: 0 + -2.857142857 = -2.857142857
-1.714285714z + z2 = -2.857142857

The z term is -1.714285714z.  Take half its coefficient (-0.857142857).
Square it (0.7346938773) and add it to both sides.

Add '0.7346938773' to each side of the equation.
-1.714285714z + 0.7346938773 + z2 = -2.857142857 + 0.7346938773

Reorder the terms:
0.7346938773 + -1.714285714z + z2 = -2.857142857 + 0.7346938773

Combine like terms: -2.857142857 + 0.7346938773 = -2.1224489797
0.7346938773 + -1.714285714z + z2 = -2.1224489797

Factor a perfect square on the left side:
(z + -0.857142857)(z + -0.857142857) = -2.1224489797

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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