-4.9t^2+10t+190=0

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Solution for -4.9t^2+10t+190=0 equation:


Simplifying
-4.9t2 + 10t + 190 = 0

Reorder the terms:
190 + 10t + -4.9t2 = 0

Solving
190 + 10t + -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'.
-38.7755102 + -2.040816327t + t2 = 0

Move the constant term to the right:

Add '38.7755102' to each side of the equation.
-38.7755102 + -2.040816327t + 38.7755102 + t2 = 0 + 38.7755102

Reorder the terms:
-38.7755102 + 38.7755102 + -2.040816327t + t2 = 0 + 38.7755102

Combine like terms: -38.7755102 + 38.7755102 = 0.0000000
0.0000000 + -2.040816327t + t2 = 0 + 38.7755102
-2.040816327t + t2 = 0 + 38.7755102

Combine like terms: 0 + 38.7755102 = 38.7755102
-2.040816327t + t2 = 38.7755102

The t term is -2.040816327t.  Take half its coefficient (-1.020408164).
Square it (1.041232821) and add it to both sides.

Add '1.041232821' to each side of the equation.
-2.040816327t + 1.041232821 + t2 = 38.7755102 + 1.041232821

Reorder the terms:
1.041232821 + -2.040816327t + t2 = 38.7755102 + 1.041232821

Combine like terms: 38.7755102 + 1.041232821 = 39.816743021
1.041232821 + -2.040816327t + t2 = 39.816743021

Factor a perfect square on the left side:
(t + -1.020408164)(t + -1.020408164) = 39.816743021

Calculate the square root of the right side: 6.310050952

Break this problem into two subproblems by setting 
(t + -1.020408164) equal to 6.310050952 and -6.310050952.

Subproblem 1

t + -1.020408164 = 6.310050952 Simplifying t + -1.020408164 = 6.310050952 Reorder the terms: -1.020408164 + t = 6.310050952 Solving -1.020408164 + t = 6.310050952 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.020408164' to each side of the equation. -1.020408164 + 1.020408164 + t = 6.310050952 + 1.020408164 Combine like terms: -1.020408164 + 1.020408164 = 0.000000000 0.000000000 + t = 6.310050952 + 1.020408164 t = 6.310050952 + 1.020408164 Combine like terms: 6.310050952 + 1.020408164 = 7.330459116 t = 7.330459116 Simplifying t = 7.330459116

Subproblem 2

t + -1.020408164 = -6.310050952 Simplifying t + -1.020408164 = -6.310050952 Reorder the terms: -1.020408164 + t = -6.310050952 Solving -1.020408164 + t = -6.310050952 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.020408164' to each side of the equation. -1.020408164 + 1.020408164 + t = -6.310050952 + 1.020408164 Combine like terms: -1.020408164 + 1.020408164 = 0.000000000 0.000000000 + t = -6.310050952 + 1.020408164 t = -6.310050952 + 1.020408164 Combine like terms: -6.310050952 + 1.020408164 = -5.289642788 t = -5.289642788 Simplifying t = -5.289642788

Solution

The solution to the problem is based on the solutions from the subproblems. t = {7.330459116, -5.289642788}

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