0=-4.9t^2+29.4t+2.5

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Solution for 0=-4.9t^2+29.4t+2.5 equation:


Simplifying
0 = -4.9t2 + 29.4t + 2.5

Reorder the terms:
0 = 2.5 + 29.4t + -4.9t2

Solving
0 = 2.5 + 29.4t + -4.9t2

Solving for variable 't'.

Combine like terms: 0 + -2.5 = -2.5
-2.5 + -29.4t + 4.9t2 = 2.5 + 29.4t + -4.9t2 + -2.5 + -29.4t + 4.9t2

Reorder the terms:
-2.5 + -29.4t + 4.9t2 = 2.5 + -2.5 + 29.4t + -29.4t + -4.9t2 + 4.9t2

Combine like terms: 2.5 + -2.5 = 0.0
-2.5 + -29.4t + 4.9t2 = 0.0 + 29.4t + -29.4t + -4.9t2 + 4.9t2
-2.5 + -29.4t + 4.9t2 = 29.4t + -29.4t + -4.9t2 + 4.9t2

Combine like terms: 29.4t + -29.4t = 0.0
-2.5 + -29.4t + 4.9t2 = 0.0 + -4.9t2 + 4.9t2
-2.5 + -29.4t + 4.9t2 = -4.9t2 + 4.9t2

Combine like terms: -4.9t2 + 4.9t2 = 0.0
-2.5 + -29.4t + 4.9t2 = 0.0

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

Divide each side by '4.9'.
-0.5102040816 + -6t + t2 = 0

Move the constant term to the right:

Add '0.5102040816' to each side of the equation.
-0.5102040816 + -6t + 0.5102040816 + t2 = 0 + 0.5102040816

Reorder the terms:
-0.5102040816 + 0.5102040816 + -6t + t2 = 0 + 0.5102040816

Combine like terms: -0.5102040816 + 0.5102040816 = 0.0000000000
0.0000000000 + -6t + t2 = 0 + 0.5102040816
-6t + t2 = 0 + 0.5102040816

Combine like terms: 0 + 0.5102040816 = 0.5102040816
-6t + t2 = 0.5102040816

The t term is -6t.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6t + 9 + t2 = 0.5102040816 + 9

Reorder the terms:
9 + -6t + t2 = 0.5102040816 + 9

Combine like terms: 0.5102040816 + 9 = 9.5102040816
9 + -6t + t2 = 9.5102040816

Factor a perfect square on the left side:
(t + -3)(t + -3) = 9.5102040816

Calculate the square root of the right side: 3.083861878

Break this problem into two subproblems by setting 
(t + -3) equal to 3.083861878 and -3.083861878.

Subproblem 1

t + -3 = 3.083861878 Simplifying t + -3 = 3.083861878 Reorder the terms: -3 + t = 3.083861878 Solving -3 + t = 3.083861878 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = 3.083861878 + 3 Combine like terms: -3 + 3 = 0 0 + t = 3.083861878 + 3 t = 3.083861878 + 3 Combine like terms: 3.083861878 + 3 = 6.083861878 t = 6.083861878 Simplifying t = 6.083861878

Subproblem 2

t + -3 = -3.083861878 Simplifying t + -3 = -3.083861878 Reorder the terms: -3 + t = -3.083861878 Solving -3 + t = -3.083861878 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = -3.083861878 + 3 Combine like terms: -3 + 3 = 0 0 + t = -3.083861878 + 3 t = -3.083861878 + 3 Combine like terms: -3.083861878 + 3 = -0.083861878 t = -0.083861878 Simplifying t = -0.083861878

Solution

The solution to the problem is based on the solutions from the subproblems. t = {6.083861878, -0.083861878}

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