4t^2+2t-4=0

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Solution for 4t^2+2t-4=0 equation:


Simplifying
4t2 + 2t + -4 = 0

Reorder the terms:
-4 + 2t + 4t2 = 0

Solving
-4 + 2t + 4t2 = 0

Solving for variable 't'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-2 + t + 2t2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-2 + t + 2t2)' equal to zero and attempt to solve: Simplifying -2 + t + 2t2 = 0 Solving -2 + t + 2t2 = 0 Begin completing the square. Divide all terms by 2 the coefficient of the squared term: Divide each side by '2'. -1 + 0.5t + t2 = 0 Move the constant term to the right: Add '1' to each side of the equation. -1 + 0.5t + 1 + t2 = 0 + 1 Reorder the terms: -1 + 1 + 0.5t + t2 = 0 + 1 Combine like terms: -1 + 1 = 0 0 + 0.5t + t2 = 0 + 1 0.5t + t2 = 0 + 1 Combine like terms: 0 + 1 = 1 0.5t + t2 = 1 The t term is t. 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. 0.5t + 0.25 + t2 = 1 + 0.25 Reorder the terms: 0.25 + 0.5t + t2 = 1 + 0.25 Combine like terms: 1 + 0.25 = 1.25 0.25 + 0.5t + t2 = 1.25 Factor a perfect square on the left side: (t + 0.5)(t + 0.5) = 1.25 Calculate the square root of the right side: 1.118033989 Break this problem into two subproblems by setting (t + 0.5) equal to 1.118033989 and -1.118033989.

Subproblem 1

t + 0.5 = 1.118033989 Simplifying t + 0.5 = 1.118033989 Reorder the terms: 0.5 + t = 1.118033989 Solving 0.5 + t = 1.118033989 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = 1.118033989 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = 1.118033989 + -0.5 t = 1.118033989 + -0.5 Combine like terms: 1.118033989 + -0.5 = 0.618033989 t = 0.618033989 Simplifying t = 0.618033989

Subproblem 2

t + 0.5 = -1.118033989 Simplifying t + 0.5 = -1.118033989 Reorder the terms: 0.5 + t = -1.118033989 Solving 0.5 + t = -1.118033989 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = -1.118033989 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = -1.118033989 + -0.5 t = -1.118033989 + -0.5 Combine like terms: -1.118033989 + -0.5 = -1.618033989 t = -1.618033989 Simplifying t = -1.618033989

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.618033989, -1.618033989}

Solution

t = {0.618033989, -1.618033989}

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