6z^2+43z+7*7z^2+4z-6=

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Solution for 6z^2+43z+7*7z^2+4z-6= equation:


Simplifying
6z2 + 43z + 7 * 7z2 + 4z + -6 = 0

Multiply 7 * 7
6z2 + 43z + 49z2 + 4z + -6 = 0

Reorder the terms:
-6 + 43z + 4z + 6z2 + 49z2 = 0

Combine like terms: 43z + 4z = 47z
-6 + 47z + 6z2 + 49z2 = 0

Combine like terms: 6z2 + 49z2 = 55z2
-6 + 47z + 55z2 = 0

Solving
-6 + 47z + 55z2 = 0

Solving for variable 'z'.

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

Divide each side by '55'.
-0.1090909091 + 0.8545454545z + z2 = 0

Move the constant term to the right:

Add '0.1090909091' to each side of the equation.
-0.1090909091 + 0.8545454545z + 0.1090909091 + z2 = 0 + 0.1090909091

Reorder the terms:
-0.1090909091 + 0.1090909091 + 0.8545454545z + z2 = 0 + 0.1090909091

Combine like terms: -0.1090909091 + 0.1090909091 = 0.0000000000
0.0000000000 + 0.8545454545z + z2 = 0 + 0.1090909091
0.8545454545z + z2 = 0 + 0.1090909091

Combine like terms: 0 + 0.1090909091 = 0.1090909091
0.8545454545z + z2 = 0.1090909091

The z term is 0.8545454545z.  Take half its coefficient (0.4272727273).
Square it (0.1825619835) and add it to both sides.

Add '0.1825619835' to each side of the equation.
0.8545454545z + 0.1825619835 + z2 = 0.1090909091 + 0.1825619835

Reorder the terms:
0.1825619835 + 0.8545454545z + z2 = 0.1090909091 + 0.1825619835

Combine like terms: 0.1090909091 + 0.1825619835 = 0.2916528926
0.1825619835 + 0.8545454545z + z2 = 0.2916528926

Factor a perfect square on the left side:
(z + 0.4272727273)(z + 0.4272727273) = 0.2916528926

Calculate the square root of the right side: 0.540048972

Break this problem into two subproblems by setting 
(z + 0.4272727273) equal to 0.540048972 and -0.540048972.

Subproblem 1

z + 0.4272727273 = 0.540048972 Simplifying z + 0.4272727273 = 0.540048972 Reorder the terms: 0.4272727273 + z = 0.540048972 Solving 0.4272727273 + z = 0.540048972 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.4272727273' to each side of the equation. 0.4272727273 + -0.4272727273 + z = 0.540048972 + -0.4272727273 Combine like terms: 0.4272727273 + -0.4272727273 = 0.0000000000 0.0000000000 + z = 0.540048972 + -0.4272727273 z = 0.540048972 + -0.4272727273 Combine like terms: 0.540048972 + -0.4272727273 = 0.1127762447 z = 0.1127762447 Simplifying z = 0.1127762447

Subproblem 2

z + 0.4272727273 = -0.540048972 Simplifying z + 0.4272727273 = -0.540048972 Reorder the terms: 0.4272727273 + z = -0.540048972 Solving 0.4272727273 + z = -0.540048972 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.4272727273' to each side of the equation. 0.4272727273 + -0.4272727273 + z = -0.540048972 + -0.4272727273 Combine like terms: 0.4272727273 + -0.4272727273 = 0.0000000000 0.0000000000 + z = -0.540048972 + -0.4272727273 z = -0.540048972 + -0.4272727273 Combine like terms: -0.540048972 + -0.4272727273 = -0.9673216993 z = -0.9673216993 Simplifying z = -0.9673216993

Solution

The solution to the problem is based on the solutions from the subproblems. z = {0.1127762447, -0.9673216993}

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