4.9t^2+2.5t-50=0

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Solution for 4.9t^2+2.5t-50=0 equation:


Simplifying
4.9t2 + 2.5t + -50 = 0

Reorder the terms:
-50 + 2.5t + 4.9t2 = 0

Solving
-50 + 2.5t + 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'.
-10.20408163 + 0.5102040816t + t2 = 0

Move the constant term to the right:

Add '10.20408163' to each side of the equation.
-10.20408163 + 0.5102040816t + 10.20408163 + t2 = 0 + 10.20408163

Reorder the terms:
-10.20408163 + 10.20408163 + 0.5102040816t + t2 = 0 + 10.20408163

Combine like terms: -10.20408163 + 10.20408163 = 0.00000000
0.00000000 + 0.5102040816t + t2 = 0 + 10.20408163
0.5102040816t + t2 = 0 + 10.20408163

Combine like terms: 0 + 10.20408163 = 10.20408163
0.5102040816t + t2 = 10.20408163

The t term is 0.5102040816t.  Take half its coefficient (0.2551020408).
Square it (0.06507705122) and add it to both sides.

Add '0.06507705122' to each side of the equation.
0.5102040816t + 0.06507705122 + t2 = 10.20408163 + 0.06507705122

Reorder the terms:
0.06507705122 + 0.5102040816t + t2 = 10.20408163 + 0.06507705122

Combine like terms: 10.20408163 + 0.06507705122 = 10.26915868122
0.06507705122 + 0.5102040816t + t2 = 10.26915868122

Factor a perfect square on the left side:
(t + 0.2551020408)(t + 0.2551020408) = 10.26915868122

Calculate the square root of the right side: 3.204552805

Break this problem into two subproblems by setting 
(t + 0.2551020408) equal to 3.204552805 and -3.204552805.

Subproblem 1

t + 0.2551020408 = 3.204552805 Simplifying t + 0.2551020408 = 3.204552805 Reorder the terms: 0.2551020408 + t = 3.204552805 Solving 0.2551020408 + t = 3.204552805 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2551020408' to each side of the equation. 0.2551020408 + -0.2551020408 + t = 3.204552805 + -0.2551020408 Combine like terms: 0.2551020408 + -0.2551020408 = 0.0000000000 0.0000000000 + t = 3.204552805 + -0.2551020408 t = 3.204552805 + -0.2551020408 Combine like terms: 3.204552805 + -0.2551020408 = 2.9494507642 t = 2.9494507642 Simplifying t = 2.9494507642

Subproblem 2

t + 0.2551020408 = -3.204552805 Simplifying t + 0.2551020408 = -3.204552805 Reorder the terms: 0.2551020408 + t = -3.204552805 Solving 0.2551020408 + t = -3.204552805 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2551020408' to each side of the equation. 0.2551020408 + -0.2551020408 + t = -3.204552805 + -0.2551020408 Combine like terms: 0.2551020408 + -0.2551020408 = 0.0000000000 0.0000000000 + t = -3.204552805 + -0.2551020408 t = -3.204552805 + -0.2551020408 Combine like terms: -3.204552805 + -0.2551020408 = -3.4596548458 t = -3.4596548458 Simplifying t = -3.4596548458

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.9494507642, -3.4596548458}

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