0=(4.9t^2)-30t+10

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Solution for 0=(4.9t^2)-30t+10 equation:


Simplifying
0 = (4.9t2) + -30t + 10

Reorder the terms:
0 = 10 + -30t + (4.9t2)

Solving
0 = 10 + -30t + (4.9t2)

Solving for variable 't'.

Combine like terms: 0 + -10 = -10
-10 + 30t + (-4.9t2) = 10 + -30t + (4.9t2) + -10 + 30t + (-4.9t2)

Reorder the terms:
-10 + 30t + (-4.9t2) = 10 + -10 + -30t + 30t + (4.9t2) + (-4.9t2)

Combine like terms: 10 + -10 = 0
-10 + 30t + (-4.9t2) = 0 + -30t + 30t + (4.9t2) + (-4.9t2)
-10 + 30t + (-4.9t2) = -30t + 30t + (4.9t2) + (-4.9t2)

Combine like terms: -30t + 30t = 0
-10 + 30t + (-4.9t2) = 0 + (4.9t2) + (-4.9t2)
-10 + 30t + (-4.9t2) = (4.9t2) + (-4.9t2)

Combine like terms: (4.9t2) + (-4.9t2) = 0.0
-10 + 30t + (-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'.
2.040816327 + -6.12244898t + t2 = 0

Move the constant term to the right:

Add '-2.040816327' to each side of the equation.
2.040816327 + -6.12244898t + -2.040816327 + t2 = 0 + -2.040816327

Reorder the terms:
2.040816327 + -2.040816327 + -6.12244898t + t2 = 0 + -2.040816327

Combine like terms: 2.040816327 + -2.040816327 = 0.000000000
0.000000000 + -6.12244898t + t2 = 0 + -2.040816327
-6.12244898t + t2 = 0 + -2.040816327

Combine like terms: 0 + -2.040816327 = -2.040816327
-6.12244898t + t2 = -2.040816327

The t term is -6.12244898t.  Take half its coefficient (-3.06122449).
Square it (9.371095378) and add it to both sides.

Add '9.371095378' to each side of the equation.
-6.12244898t + 9.371095378 + t2 = -2.040816327 + 9.371095378

Reorder the terms:
9.371095378 + -6.12244898t + t2 = -2.040816327 + 9.371095378

Combine like terms: -2.040816327 + 9.371095378 = 7.330279051
9.371095378 + -6.12244898t + t2 = 7.330279051

Factor a perfect square on the left side:
((t) + -3.06122449)((t) + -3.06122449) = 7.330279051

Calculate the square root of the right side: 2.707448809

Break this problem into two subproblems by setting 
((t) + -3.06122449) equal to 2.707448809 and -2.707448809.

Subproblem 1

(t) + -3.06122449 = 2.707448809 Simplifying (t) + -3.06122449 = 2.707448809 t + -3.06122449 = 2.707448809 Reorder the terms: -3.06122449 + t = 2.707448809 Solving -3.06122449 + t = 2.707448809 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.06122449' to each side of the equation. -3.06122449 + 3.06122449 + t = 2.707448809 + 3.06122449 Combine like terms: -3.06122449 + 3.06122449 = 0.00000000 0.00000000 + t = 2.707448809 + 3.06122449 t = 2.707448809 + 3.06122449 Combine like terms: 2.707448809 + 3.06122449 = 5.768673299 t = 5.768673299 Simplifying t = 5.768673299

Subproblem 2

(t) + -3.06122449 = -2.707448809 Simplifying (t) + -3.06122449 = -2.707448809 t + -3.06122449 = -2.707448809 Reorder the terms: -3.06122449 + t = -2.707448809 Solving -3.06122449 + t = -2.707448809 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.06122449' to each side of the equation. -3.06122449 + 3.06122449 + t = -2.707448809 + 3.06122449 Combine like terms: -3.06122449 + 3.06122449 = 0.00000000 0.00000000 + t = -2.707448809 + 3.06122449 t = -2.707448809 + 3.06122449 Combine like terms: -2.707448809 + 3.06122449 = 0.353775681 t = 0.353775681 Simplifying t = 0.353775681

Solution

The solution to the problem is based on the solutions from the subproblems. t = {5.768673299, 0.353775681}

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