4.9t^2+10-18.72t=0

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Solution for 4.9t^2+10-18.72t=0 equation:


Simplifying
4.9t2 + 10 + -18.72t = 0

Reorder the terms:
10 + -18.72t + 4.9t2 = 0

Solving
10 + -18.72t + 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'.
2.040816327 + -3.820408163t + t2 = 0

Move the constant term to the right:

Add '-2.040816327' to each side of the equation.
2.040816327 + -3.820408163t + -2.040816327 + t2 = 0 + -2.040816327

Reorder the terms:
2.040816327 + -2.040816327 + -3.820408163t + t2 = 0 + -2.040816327

Combine like terms: 2.040816327 + -2.040816327 = 0.000000000
0.000000000 + -3.820408163t + t2 = 0 + -2.040816327
-3.820408163t + t2 = 0 + -2.040816327

Combine like terms: 0 + -2.040816327 = -2.040816327
-3.820408163t + t2 = -2.040816327

The t term is -3.820408163t.  Take half its coefficient (-1.910204082).
Square it (3.648879635) and add it to both sides.

Add '3.648879635' to each side of the equation.
-3.820408163t + 3.648879635 + t2 = -2.040816327 + 3.648879635

Reorder the terms:
3.648879635 + -3.820408163t + t2 = -2.040816327 + 3.648879635

Combine like terms: -2.040816327 + 3.648879635 = 1.608063308
3.648879635 + -3.820408163t + t2 = 1.608063308

Factor a perfect square on the left side:
(t + -1.910204082)(t + -1.910204082) = 1.608063308

Calculate the square root of the right side: 1.268094361

Break this problem into two subproblems by setting 
(t + -1.910204082) equal to 1.268094361 and -1.268094361.

Subproblem 1

t + -1.910204082 = 1.268094361 Simplifying t + -1.910204082 = 1.268094361 Reorder the terms: -1.910204082 + t = 1.268094361 Solving -1.910204082 + t = 1.268094361 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.910204082' to each side of the equation. -1.910204082 + 1.910204082 + t = 1.268094361 + 1.910204082 Combine like terms: -1.910204082 + 1.910204082 = 0.000000000 0.000000000 + t = 1.268094361 + 1.910204082 t = 1.268094361 + 1.910204082 Combine like terms: 1.268094361 + 1.910204082 = 3.178298443 t = 3.178298443 Simplifying t = 3.178298443

Subproblem 2

t + -1.910204082 = -1.268094361 Simplifying t + -1.910204082 = -1.268094361 Reorder the terms: -1.910204082 + t = -1.268094361 Solving -1.910204082 + t = -1.268094361 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.910204082' to each side of the equation. -1.910204082 + 1.910204082 + t = -1.268094361 + 1.910204082 Combine like terms: -1.910204082 + 1.910204082 = 0.000000000 0.000000000 + t = -1.268094361 + 1.910204082 t = -1.268094361 + 1.910204082 Combine like terms: -1.268094361 + 1.910204082 = 0.642109721 t = 0.642109721 Simplifying t = 0.642109721

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.178298443, 0.642109721}

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