0=12b^2+2b-20

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Solution for 0=12b^2+2b-20 equation:


Simplifying
0 = 12b2 + 2b + -20

Reorder the terms:
0 = -20 + 2b + 12b2

Solving
0 = -20 + 2b + 12b2

Solving for variable 'b'.

Combine like terms: 0 + 20 = 20
20 + -2b + -12b2 = -20 + 2b + 12b2 + 20 + -2b + -12b2

Reorder the terms:
20 + -2b + -12b2 = -20 + 20 + 2b + -2b + 12b2 + -12b2

Combine like terms: -20 + 20 = 0
20 + -2b + -12b2 = 0 + 2b + -2b + 12b2 + -12b2
20 + -2b + -12b2 = 2b + -2b + 12b2 + -12b2

Combine like terms: 2b + -2b = 0
20 + -2b + -12b2 = 0 + 12b2 + -12b2
20 + -2b + -12b2 = 12b2 + -12b2

Combine like terms: 12b2 + -12b2 = 0
20 + -2b + -12b2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(10 + -1b + -6b2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(10 + -1b + -6b2)' equal to zero and attempt to solve: Simplifying 10 + -1b + -6b2 = 0 Solving 10 + -1b + -6b2 = 0 Begin completing the square. Divide all terms by -6 the coefficient of the squared term: Divide each side by '-6'. -1.666666667 + 0.1666666667b + b2 = 0 Move the constant term to the right: Add '1.666666667' to each side of the equation. -1.666666667 + 0.1666666667b + 1.666666667 + b2 = 0 + 1.666666667 Reorder the terms: -1.666666667 + 1.666666667 + 0.1666666667b + b2 = 0 + 1.666666667 Combine like terms: -1.666666667 + 1.666666667 = 0.000000000 0.000000000 + 0.1666666667b + b2 = 0 + 1.666666667 0.1666666667b + b2 = 0 + 1.666666667 Combine like terms: 0 + 1.666666667 = 1.666666667 0.1666666667b + b2 = 1.666666667 The b term is 0.1666666667b. Take half its coefficient (0.08333333335). Square it (0.006944444447) and add it to both sides. Add '0.006944444447' to each side of the equation. 0.1666666667b + 0.006944444447 + b2 = 1.666666667 + 0.006944444447 Reorder the terms: 0.006944444447 + 0.1666666667b + b2 = 1.666666667 + 0.006944444447 Combine like terms: 1.666666667 + 0.006944444447 = 1.673611111447 0.006944444447 + 0.1666666667b + b2 = 1.673611111447 Factor a perfect square on the left side: (b + 0.08333333335)(b + 0.08333333335) = 1.673611111447 Calculate the square root of the right side: 1.293681225 Break this problem into two subproblems by setting (b + 0.08333333335) equal to 1.293681225 and -1.293681225.

Subproblem 1

b + 0.08333333335 = 1.293681225 Simplifying b + 0.08333333335 = 1.293681225 Reorder the terms: 0.08333333335 + b = 1.293681225 Solving 0.08333333335 + b = 1.293681225 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.08333333335' to each side of the equation. 0.08333333335 + -0.08333333335 + b = 1.293681225 + -0.08333333335 Combine like terms: 0.08333333335 + -0.08333333335 = 0.00000000000 0.00000000000 + b = 1.293681225 + -0.08333333335 b = 1.293681225 + -0.08333333335 Combine like terms: 1.293681225 + -0.08333333335 = 1.21034789165 b = 1.21034789165 Simplifying b = 1.21034789165

Subproblem 2

b + 0.08333333335 = -1.293681225 Simplifying b + 0.08333333335 = -1.293681225 Reorder the terms: 0.08333333335 + b = -1.293681225 Solving 0.08333333335 + b = -1.293681225 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.08333333335' to each side of the equation. 0.08333333335 + -0.08333333335 + b = -1.293681225 + -0.08333333335 Combine like terms: 0.08333333335 + -0.08333333335 = 0.00000000000 0.00000000000 + b = -1.293681225 + -0.08333333335 b = -1.293681225 + -0.08333333335 Combine like terms: -1.293681225 + -0.08333333335 = -1.37701455835 b = -1.37701455835 Simplifying b = -1.37701455835

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.21034789165, -1.37701455835}

Solution

b = {1.21034789165, -1.37701455835}

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