4.9t^2-8t=60

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Solution for 4.9t^2-8t=60 equation:


Simplifying
4.9t2 + -8t = 60

Reorder the terms:
-8t + 4.9t2 = 60

Solving
-8t + 4.9t2 = 60

Solving for variable 't'.

Reorder the terms:
-60 + -8t + 4.9t2 = 60 + -60

Combine like terms: 60 + -60 = 0
-60 + -8t + 4.9t2 = 0

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

Divide each side by '4.9'.
-12.24489796 + -1.632653061t + t2 = 0

Move the constant term to the right:

Add '12.24489796' to each side of the equation.
-12.24489796 + -1.632653061t + 12.24489796 + t2 = 0 + 12.24489796

Reorder the terms:
-12.24489796 + 12.24489796 + -1.632653061t + t2 = 0 + 12.24489796

Combine like terms: -12.24489796 + 12.24489796 = 0.00000000
0.00000000 + -1.632653061t + t2 = 0 + 12.24489796
-1.632653061t + t2 = 0 + 12.24489796

Combine like terms: 0 + 12.24489796 = 12.24489796
-1.632653061t + t2 = 12.24489796

The t term is -1.632653061t.  Take half its coefficient (-0.8163265305).
Square it (0.6663890044) and add it to both sides.

Add '0.6663890044' to each side of the equation.
-1.632653061t + 0.6663890044 + t2 = 12.24489796 + 0.6663890044

Reorder the terms:
0.6663890044 + -1.632653061t + t2 = 12.24489796 + 0.6663890044

Combine like terms: 12.24489796 + 0.6663890044 = 12.9112869644
0.6663890044 + -1.632653061t + t2 = 12.9112869644

Factor a perfect square on the left side:
(t + -0.8163265305)(t + -0.8163265305) = 12.9112869644

Calculate the square root of the right side: 3.593227931

Break this problem into two subproblems by setting 
(t + -0.8163265305) equal to 3.593227931 and -3.593227931.

Subproblem 1

t + -0.8163265305 = 3.593227931 Simplifying t + -0.8163265305 = 3.593227931 Reorder the terms: -0.8163265305 + t = 3.593227931 Solving -0.8163265305 + t = 3.593227931 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.8163265305' to each side of the equation. -0.8163265305 + 0.8163265305 + t = 3.593227931 + 0.8163265305 Combine like terms: -0.8163265305 + 0.8163265305 = 0.0000000000 0.0000000000 + t = 3.593227931 + 0.8163265305 t = 3.593227931 + 0.8163265305 Combine like terms: 3.593227931 + 0.8163265305 = 4.4095544615 t = 4.4095544615 Simplifying t = 4.4095544615

Subproblem 2

t + -0.8163265305 = -3.593227931 Simplifying t + -0.8163265305 = -3.593227931 Reorder the terms: -0.8163265305 + t = -3.593227931 Solving -0.8163265305 + t = -3.593227931 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.8163265305' to each side of the equation. -0.8163265305 + 0.8163265305 + t = -3.593227931 + 0.8163265305 Combine like terms: -0.8163265305 + 0.8163265305 = 0.0000000000 0.0000000000 + t = -3.593227931 + 0.8163265305 t = -3.593227931 + 0.8163265305 Combine like terms: -3.593227931 + 0.8163265305 = -2.7769014005 t = -2.7769014005 Simplifying t = -2.7769014005

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.4095544615, -2.7769014005}

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