4.9t^2-3.443t-0.25=0

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Solution for 4.9t^2-3.443t-0.25=0 equation:


Simplifying
4.9t2 + -3.443t + -0.25 = 0

Reorder the terms:
-0.25 + -3.443t + 4.9t2 = 0

Solving
-0.25 + -3.443t + 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'.
-0.05102040816 + -0.7026530612t + t2 = 0

Move the constant term to the right:

Add '0.05102040816' to each side of the equation.
-0.05102040816 + -0.7026530612t + 0.05102040816 + t2 = 0 + 0.05102040816

Reorder the terms:
-0.05102040816 + 0.05102040816 + -0.7026530612t + t2 = 0 + 0.05102040816

Combine like terms: -0.05102040816 + 0.05102040816 = 0.00000000000
0.00000000000 + -0.7026530612t + t2 = 0 + 0.05102040816
-0.7026530612t + t2 = 0 + 0.05102040816

Combine like terms: 0 + 0.05102040816 = 0.05102040816
-0.7026530612t + t2 = 0.05102040816

The t term is -0.7026530612t.  Take half its coefficient (-0.3513265306).
Square it (0.1234303311) and add it to both sides.

Add '0.1234303311' to each side of the equation.
-0.7026530612t + 0.1234303311 + t2 = 0.05102040816 + 0.1234303311

Reorder the terms:
0.1234303311 + -0.7026530612t + t2 = 0.05102040816 + 0.1234303311

Combine like terms: 0.05102040816 + 0.1234303311 = 0.17445073926
0.1234303311 + -0.7026530612t + t2 = 0.17445073926

Factor a perfect square on the left side:
(t + -0.3513265306)(t + -0.3513265306) = 0.17445073926

Calculate the square root of the right side: 0.417673005

Break this problem into two subproblems by setting 
(t + -0.3513265306) equal to 0.417673005 and -0.417673005.

Subproblem 1

t + -0.3513265306 = 0.417673005 Simplifying t + -0.3513265306 = 0.417673005 Reorder the terms: -0.3513265306 + t = 0.417673005 Solving -0.3513265306 + t = 0.417673005 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.3513265306' to each side of the equation. -0.3513265306 + 0.3513265306 + t = 0.417673005 + 0.3513265306 Combine like terms: -0.3513265306 + 0.3513265306 = 0.0000000000 0.0000000000 + t = 0.417673005 + 0.3513265306 t = 0.417673005 + 0.3513265306 Combine like terms: 0.417673005 + 0.3513265306 = 0.7689995356 t = 0.7689995356 Simplifying t = 0.7689995356

Subproblem 2

t + -0.3513265306 = -0.417673005 Simplifying t + -0.3513265306 = -0.417673005 Reorder the terms: -0.3513265306 + t = -0.417673005 Solving -0.3513265306 + t = -0.417673005 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.3513265306' to each side of the equation. -0.3513265306 + 0.3513265306 + t = -0.417673005 + 0.3513265306 Combine like terms: -0.3513265306 + 0.3513265306 = 0.0000000000 0.0000000000 + t = -0.417673005 + 0.3513265306 t = -0.417673005 + 0.3513265306 Combine like terms: -0.417673005 + 0.3513265306 = -0.0663464744 t = -0.0663464744 Simplifying t = -0.0663464744

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.7689995356, -0.0663464744}

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