-9.8t^2+4.9t+10=0

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Solution for -9.8t^2+4.9t+10=0 equation:


Simplifying
-9.8t2 + 4.9t + 10 = 0

Reorder the terms:
10 + 4.9t + -9.8t2 = 0

Solving
10 + 4.9t + -9.8t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-9.8 the coefficient of the squared term: 

Divide each side by '-9.8'.
-1.020408163 + -0.5t + t2 = 0

Move the constant term to the right:

Add '1.020408163' to each side of the equation.
-1.020408163 + -0.5t + 1.020408163 + t2 = 0 + 1.020408163

Reorder the terms:
-1.020408163 + 1.020408163 + -0.5t + t2 = 0 + 1.020408163

Combine like terms: -1.020408163 + 1.020408163 = 0.000000000
0.000000000 + -0.5t + t2 = 0 + 1.020408163
-0.5t + t2 = 0 + 1.020408163

Combine like terms: 0 + 1.020408163 = 1.020408163
-0.5t + t2 = 1.020408163

The t term is -0.5t.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5t + 0.0625 + t2 = 1.020408163 + 0.0625

Reorder the terms:
0.0625 + -0.5t + t2 = 1.020408163 + 0.0625

Combine like terms: 1.020408163 + 0.0625 = 1.082908163
0.0625 + -0.5t + t2 = 1.082908163

Factor a perfect square on the left side:
(t + -0.25)(t + -0.25) = 1.082908163

Calculate the square root of the right side: 1.040628734

Break this problem into two subproblems by setting 
(t + -0.25) equal to 1.040628734 and -1.040628734.

Subproblem 1

t + -0.25 = 1.040628734 Simplifying t + -0.25 = 1.040628734 Reorder the terms: -0.25 + t = 1.040628734 Solving -0.25 + t = 1.040628734 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + t = 1.040628734 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + t = 1.040628734 + 0.25 t = 1.040628734 + 0.25 Combine like terms: 1.040628734 + 0.25 = 1.290628734 t = 1.290628734 Simplifying t = 1.290628734

Subproblem 2

t + -0.25 = -1.040628734 Simplifying t + -0.25 = -1.040628734 Reorder the terms: -0.25 + t = -1.040628734 Solving -0.25 + t = -1.040628734 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + t = -1.040628734 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + t = -1.040628734 + 0.25 t = -1.040628734 + 0.25 Combine like terms: -1.040628734 + 0.25 = -0.790628734 t = -0.790628734 Simplifying t = -0.790628734

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.290628734, -0.790628734}

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