6z-5z(z+2)=4(z-5)-3z

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Solution for 6z-5z(z+2)=4(z-5)-3z equation:


Simplifying
6z + -5z(z + 2) = 4(z + -5) + -3z

Reorder the terms:
6z + -5z(2 + z) = 4(z + -5) + -3z
6z + (2 * -5z + z * -5z) = 4(z + -5) + -3z
6z + (-10z + -5z2) = 4(z + -5) + -3z

Combine like terms: 6z + -10z = -4z
-4z + -5z2 = 4(z + -5) + -3z

Reorder the terms:
-4z + -5z2 = 4(-5 + z) + -3z
-4z + -5z2 = (-5 * 4 + z * 4) + -3z
-4z + -5z2 = (-20 + 4z) + -3z

Combine like terms: 4z + -3z = 1z
-4z + -5z2 = -20 + 1z

Solving
-4z + -5z2 = -20 + 1z

Solving for variable 'z'.

Reorder the terms:
20 + -4z + -1z + -5z2 = -20 + 1z + 20 + -1z

Combine like terms: -4z + -1z = -5z
20 + -5z + -5z2 = -20 + 1z + 20 + -1z

Reorder the terms:
20 + -5z + -5z2 = -20 + 20 + 1z + -1z

Combine like terms: -20 + 20 = 0
20 + -5z + -5z2 = 0 + 1z + -1z
20 + -5z + -5z2 = 1z + -1z

Combine like terms: 1z + -1z = 0
20 + -5z + -5z2 = 0

Factor out the Greatest Common Factor (GCF), '5'.
5(4 + -1z + -1z2) = 0

Ignore the factor 5.

Subproblem 1

Set the factor '(4 + -1z + -1z2)' equal to zero and attempt to solve: Simplifying 4 + -1z + -1z2 = 0 Solving 4 + -1z + -1z2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -4 + z + z2 = 0 Move the constant term to the right: Add '4' to each side of the equation. -4 + z + 4 + z2 = 0 + 4 Reorder the terms: -4 + 4 + z + z2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + z + z2 = 0 + 4 z + z2 = 0 + 4 Combine like terms: 0 + 4 = 4 z + z2 = 4 The z term is z. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. + 0.25 + z2 = 4 + 0.25 Combine like terms: + 0.25 = 1.25 1.25 + z2 = 4 + 0.25 Combine like terms: 4 + 0.25 = 4.25 1.25 + z2 = 4.25 Factor a perfect square on the left side: (z + 0.5)(z + 0.5) = 4.25 Calculate the square root of the right side: 2.061552813 Break this problem into two subproblems by setting (z + 0.5) equal to 2.061552813 and -2.061552813.

Subproblem 1

z + 0.5 = 2.061552813 Simplifying z + 0.5 = 2.061552813 Reorder the terms: 0.5 + z = 2.061552813 Solving 0.5 + z = 2.061552813 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + z = 2.061552813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + z = 2.061552813 + -0.5 z = 2.061552813 + -0.5 Combine like terms: 2.061552813 + -0.5 = 1.561552813 z = 1.561552813 Simplifying z = 1.561552813

Subproblem 2

z + 0.5 = -2.061552813 Simplifying z + 0.5 = -2.061552813 Reorder the terms: 0.5 + z = -2.061552813 Solving 0.5 + z = -2.061552813 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + z = -2.061552813 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + z = -2.061552813 + -0.5 z = -2.061552813 + -0.5 Combine like terms: -2.061552813 + -0.5 = -2.561552813 z = -2.561552813 Simplifying z = -2.561552813

Solution

The solution to the problem is based on the solutions from the subproblems. z = {1.561552813, -2.561552813}

Solution

z = {1.561552813, -2.561552813}

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