(4.9t^2)+0.28t-2.2=0

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Solution for (4.9t^2)+0.28t-2.2=0 equation:


Simplifying
(4.9t2) + 0.28t + -2.2 = 0

Reorder the terms:
-2.2 + 0.28t + (4.9t2) = 0

Solving
-2.2 + 0.28t + (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'.
-0.4489795918 + 0.05714285714t + t2 = 0

Move the constant term to the right:

Add '0.4489795918' to each side of the equation.
-0.4489795918 + 0.05714285714t + 0.4489795918 + t2 = 0 + 0.4489795918

Reorder the terms:
-0.4489795918 + 0.4489795918 + 0.05714285714t + t2 = 0 + 0.4489795918

Combine like terms: -0.4489795918 + 0.4489795918 = 0.0000000000
0.0000000000 + 0.05714285714t + t2 = 0 + 0.4489795918
0.05714285714t + t2 = 0 + 0.4489795918

Combine like terms: 0 + 0.4489795918 = 0.4489795918
0.05714285714t + t2 = 0.4489795918

The t term is 0.05714285714t.  Take half its coefficient (0.02857142857).
Square it (0.0008163265305) and add it to both sides.

Add '0.0008163265305' to each side of the equation.
0.05714285714t + 0.0008163265305 + t2 = 0.4489795918 + 0.0008163265305

Reorder the terms:
0.0008163265305 + 0.05714285714t + t2 = 0.4489795918 + 0.0008163265305

Combine like terms: 0.4489795918 + 0.0008163265305 = 0.4497959183305
0.0008163265305 + 0.05714285714t + t2 = 0.4497959183305

Factor a perfect square on the left side:
((t) + 0.02857142857)((t) + 0.02857142857) = 0.4497959183305

Calculate the square root of the right side: 0.670668263

Break this problem into two subproblems by setting 
((t) + 0.02857142857) equal to 0.670668263 and -0.670668263.

Subproblem 1

(t) + 0.02857142857 = 0.670668263 Simplifying (t) + 0.02857142857 = 0.670668263 t + 0.02857142857 = 0.670668263 Reorder the terms: 0.02857142857 + t = 0.670668263 Solving 0.02857142857 + t = 0.670668263 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.02857142857' to each side of the equation. 0.02857142857 + -0.02857142857 + t = 0.670668263 + -0.02857142857 Combine like terms: 0.02857142857 + -0.02857142857 = 0.00000000000 0.00000000000 + t = 0.670668263 + -0.02857142857 t = 0.670668263 + -0.02857142857 Combine like terms: 0.670668263 + -0.02857142857 = 0.64209683443 t = 0.64209683443 Simplifying t = 0.64209683443

Subproblem 2

(t) + 0.02857142857 = -0.670668263 Simplifying (t) + 0.02857142857 = -0.670668263 t + 0.02857142857 = -0.670668263 Reorder the terms: 0.02857142857 + t = -0.670668263 Solving 0.02857142857 + t = -0.670668263 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.02857142857' to each side of the equation. 0.02857142857 + -0.02857142857 + t = -0.670668263 + -0.02857142857 Combine like terms: 0.02857142857 + -0.02857142857 = 0.00000000000 0.00000000000 + t = -0.670668263 + -0.02857142857 t = -0.670668263 + -0.02857142857 Combine like terms: -0.670668263 + -0.02857142857 = -0.69923969157 t = -0.69923969157 Simplifying t = -0.69923969157

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.64209683443, -0.69923969157}

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