-2t^2+4t+8=0

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Solution for -2t^2+4t+8=0 equation:


Simplifying
-2t2 + 4t + 8 = 0

Reorder the terms:
8 + 4t + -2t2 = 0

Solving
8 + 4t + -2t2 = 0

Solving for variable 't'.

Factor out the Greatest Common Factor (GCF), '2'.
2(4 + 2t + -1t2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(4 + 2t + -1t2)' equal to zero and attempt to solve: Simplifying 4 + 2t + -1t2 = 0 Solving 4 + 2t + -1t2 = 0 Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. -4 + -2t + t2 = 0 Move the constant term to the right: Add '4' to each side of the equation. -4 + -2t + 4 + t2 = 0 + 4 Reorder the terms: -4 + 4 + -2t + t2 = 0 + 4 Combine like terms: -4 + 4 = 0 0 + -2t + t2 = 0 + 4 -2t + t2 = 0 + 4 Combine like terms: 0 + 4 = 4 -2t + t2 = 4 The t term is -2t. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2t + 1 + t2 = 4 + 1 Reorder the terms: 1 + -2t + t2 = 4 + 1 Combine like terms: 4 + 1 = 5 1 + -2t + t2 = 5 Factor a perfect square on the left side: (t + -1)(t + -1) = 5 Calculate the square root of the right side: 2.236067978 Break this problem into two subproblems by setting (t + -1) equal to 2.236067978 and -2.236067978.

Subproblem 1

t + -1 = 2.236067978 Simplifying t + -1 = 2.236067978 Reorder the terms: -1 + t = 2.236067978 Solving -1 + t = 2.236067978 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + t = 2.236067978 + 1 Combine like terms: -1 + 1 = 0 0 + t = 2.236067978 + 1 t = 2.236067978 + 1 Combine like terms: 2.236067978 + 1 = 3.236067978 t = 3.236067978 Simplifying t = 3.236067978

Subproblem 2

t + -1 = -2.236067978 Simplifying t + -1 = -2.236067978 Reorder the terms: -1 + t = -2.236067978 Solving -1 + t = -2.236067978 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + t = -2.236067978 + 1 Combine like terms: -1 + 1 = 0 0 + t = -2.236067978 + 1 t = -2.236067978 + 1 Combine like terms: -2.236067978 + 1 = -1.236067978 t = -1.236067978 Simplifying t = -1.236067978

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.236067978, -1.236067978}

Solution

t = {3.236067978, -1.236067978}

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