4.9t^2-1.0897t-0.28=0

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Solution for 4.9t^2-1.0897t-0.28=0 equation:


Simplifying
4.9t2 + -1.0897t + -0.28 = 0

Reorder the terms:
-0.28 + -1.0897t + 4.9t2 = 0

Solving
-0.28 + -1.0897t + 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'.
-0.05714285714 + -0.2223877551t + t2 = 0

Move the constant term to the right:

Add '0.05714285714' to each side of the equation.
-0.05714285714 + -0.2223877551t + 0.05714285714 + t2 = 0 + 0.05714285714

Reorder the terms:
-0.05714285714 + 0.05714285714 + -0.2223877551t + t2 = 0 + 0.05714285714

Combine like terms: -0.05714285714 + 0.05714285714 = 0.00000000000
0.00000000000 + -0.2223877551t + t2 = 0 + 0.05714285714
-0.2223877551t + t2 = 0 + 0.05714285714

Combine like terms: 0 + 0.05714285714 = 0.05714285714
-0.2223877551t + t2 = 0.05714285714

The t term is -0.2223877551t.  Take half its coefficient (-0.1111938776).
Square it (0.01236407842) and add it to both sides.

Add '0.01236407842' to each side of the equation.
-0.2223877551t + 0.01236407842 + t2 = 0.05714285714 + 0.01236407842

Reorder the terms:
0.01236407842 + -0.2223877551t + t2 = 0.05714285714 + 0.01236407842

Combine like terms: 0.05714285714 + 0.01236407842 = 0.06950693556
0.01236407842 + -0.2223877551t + t2 = 0.06950693556

Factor a perfect square on the left side:
(t + -0.1111938776)(t + -0.1111938776) = 0.06950693556

Calculate the square root of the right side: 0.26364168

Break this problem into two subproblems by setting 
(t + -0.1111938776) equal to 0.26364168 and -0.26364168.

Subproblem 1

t + -0.1111938776 = 0.26364168 Simplifying t + -0.1111938776 = 0.26364168 Reorder the terms: -0.1111938776 + t = 0.26364168 Solving -0.1111938776 + t = 0.26364168 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.1111938776' to each side of the equation. -0.1111938776 + 0.1111938776 + t = 0.26364168 + 0.1111938776 Combine like terms: -0.1111938776 + 0.1111938776 = 0.0000000000 0.0000000000 + t = 0.26364168 + 0.1111938776 t = 0.26364168 + 0.1111938776 Combine like terms: 0.26364168 + 0.1111938776 = 0.3748355576 t = 0.3748355576 Simplifying t = 0.3748355576

Subproblem 2

t + -0.1111938776 = -0.26364168 Simplifying t + -0.1111938776 = -0.26364168 Reorder the terms: -0.1111938776 + t = -0.26364168 Solving -0.1111938776 + t = -0.26364168 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.1111938776' to each side of the equation. -0.1111938776 + 0.1111938776 + t = -0.26364168 + 0.1111938776 Combine like terms: -0.1111938776 + 0.1111938776 = 0.0000000000 0.0000000000 + t = -0.26364168 + 0.1111938776 t = -0.26364168 + 0.1111938776 Combine like terms: -0.26364168 + 0.1111938776 = -0.1524478024 t = -0.1524478024 Simplifying t = -0.1524478024

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.3748355576, -0.1524478024}

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