-4.9t^2-9t+550=0

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Solution for -4.9t^2-9t+550=0 equation:


Simplifying
-4.9t2 + -9t + 550 = 0

Reorder the terms:
550 + -9t + -4.9t2 = 0

Solving
550 + -9t + -4.9t2 = 0

Solving for variable 't'.

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

Divide each side by '-4.9'.
-112.244898 + 1.836734694t + t2 = 0

Move the constant term to the right:

Add '112.244898' to each side of the equation.
-112.244898 + 1.836734694t + 112.244898 + t2 = 0 + 112.244898

Reorder the terms:
-112.244898 + 112.244898 + 1.836734694t + t2 = 0 + 112.244898

Combine like terms: -112.244898 + 112.244898 = 0.000000
0.000000 + 1.836734694t + t2 = 0 + 112.244898
1.836734694t + t2 = 0 + 112.244898

Combine like terms: 0 + 112.244898 = 112.244898
1.836734694t + t2 = 112.244898

The t term is 1.836734694t.  Take half its coefficient (0.918367347).
Square it (0.8433985840) and add it to both sides.

Add '0.8433985840' to each side of the equation.
1.836734694t + 0.8433985840 + t2 = 112.244898 + 0.8433985840

Reorder the terms:
0.8433985840 + 1.836734694t + t2 = 112.244898 + 0.8433985840

Combine like terms: 112.244898 + 0.8433985840 = 113.088296584
0.8433985840 + 1.836734694t + t2 = 113.088296584

Factor a perfect square on the left side:
(t + 0.918367347)(t + 0.918367347) = 113.088296584

Calculate the square root of the right side: 10.634298124

Break this problem into two subproblems by setting 
(t + 0.918367347) equal to 10.634298124 and -10.634298124.

Subproblem 1

t + 0.918367347 = 10.634298124 Simplifying t + 0.918367347 = 10.634298124 Reorder the terms: 0.918367347 + t = 10.634298124 Solving 0.918367347 + t = 10.634298124 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.918367347' to each side of the equation. 0.918367347 + -0.918367347 + t = 10.634298124 + -0.918367347 Combine like terms: 0.918367347 + -0.918367347 = 0.000000000 0.000000000 + t = 10.634298124 + -0.918367347 t = 10.634298124 + -0.918367347 Combine like terms: 10.634298124 + -0.918367347 = 9.715930777 t = 9.715930777 Simplifying t = 9.715930777

Subproblem 2

t + 0.918367347 = -10.634298124 Simplifying t + 0.918367347 = -10.634298124 Reorder the terms: 0.918367347 + t = -10.634298124 Solving 0.918367347 + t = -10.634298124 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.918367347' to each side of the equation. 0.918367347 + -0.918367347 + t = -10.634298124 + -0.918367347 Combine like terms: 0.918367347 + -0.918367347 = 0.000000000 0.000000000 + t = -10.634298124 + -0.918367347 t = -10.634298124 + -0.918367347 Combine like terms: -10.634298124 + -0.918367347 = -11.552665471 t = -11.552665471 Simplifying t = -11.552665471

Solution

The solution to the problem is based on the solutions from the subproblems. t = {9.715930777, -11.552665471}

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