-2.3=6.18t-4.9t^2

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Solution for -2.3=6.18t-4.9t^2 equation:


Simplifying
-2.3 = 6.18t + -4.9t2

Solving
-2.3 = 6.18t + -4.9t2

Solving for variable 't'.

Reorder the terms:
-2.3 + -6.18t + 4.9t2 = 6.18t + -6.18t + -4.9t2 + 4.9t2

Combine like terms: 6.18t + -6.18t = 0.00
-2.3 + -6.18t + 4.9t2 = 0.00 + -4.9t2 + 4.9t2
-2.3 + -6.18t + 4.9t2 = -4.9t2 + 4.9t2

Combine like terms: -4.9t2 + 4.9t2 = 0.0
-2.3 + -6.18t + 4.9t2 = 0.0

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

Divide each side by '4.9'.
-0.4693877551 + -1.26122449t + t2 = 0

Move the constant term to the right:

Add '0.4693877551' to each side of the equation.
-0.4693877551 + -1.26122449t + 0.4693877551 + t2 = 0 + 0.4693877551

Reorder the terms:
-0.4693877551 + 0.4693877551 + -1.26122449t + t2 = 0 + 0.4693877551

Combine like terms: -0.4693877551 + 0.4693877551 = 0.0000000000
0.0000000000 + -1.26122449t + t2 = 0 + 0.4693877551
-1.26122449t + t2 = 0 + 0.4693877551

Combine like terms: 0 + 0.4693877551 = 0.4693877551
-1.26122449t + t2 = 0.4693877551

The t term is -1.26122449t.  Take half its coefficient (-0.630612245).
Square it (0.3976718035) and add it to both sides.

Add '0.3976718035' to each side of the equation.
-1.26122449t + 0.3976718035 + t2 = 0.4693877551 + 0.3976718035

Reorder the terms:
0.3976718035 + -1.26122449t + t2 = 0.4693877551 + 0.3976718035

Combine like terms: 0.4693877551 + 0.3976718035 = 0.8670595586
0.3976718035 + -1.26122449t + t2 = 0.8670595586

Factor a perfect square on the left side:
(t + -0.630612245)(t + -0.630612245) = 0.8670595586

Calculate the square root of the right side: 0.931160329

Break this problem into two subproblems by setting 
(t + -0.630612245) equal to 0.931160329 and -0.931160329.

Subproblem 1

t + -0.630612245 = 0.931160329 Simplifying t + -0.630612245 = 0.931160329 Reorder the terms: -0.630612245 + t = 0.931160329 Solving -0.630612245 + t = 0.931160329 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.630612245' to each side of the equation. -0.630612245 + 0.630612245 + t = 0.931160329 + 0.630612245 Combine like terms: -0.630612245 + 0.630612245 = 0.000000000 0.000000000 + t = 0.931160329 + 0.630612245 t = 0.931160329 + 0.630612245 Combine like terms: 0.931160329 + 0.630612245 = 1.561772574 t = 1.561772574 Simplifying t = 1.561772574

Subproblem 2

t + -0.630612245 = -0.931160329 Simplifying t + -0.630612245 = -0.931160329 Reorder the terms: -0.630612245 + t = -0.931160329 Solving -0.630612245 + t = -0.931160329 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.630612245' to each side of the equation. -0.630612245 + 0.630612245 + t = -0.931160329 + 0.630612245 Combine like terms: -0.630612245 + 0.630612245 = 0.000000000 0.000000000 + t = -0.931160329 + 0.630612245 t = -0.931160329 + 0.630612245 Combine like terms: -0.931160329 + 0.630612245 = -0.300548084 t = -0.300548084 Simplifying t = -0.300548084

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.561772574, -0.300548084}

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