4.9t^2+340t-2720=0

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Solution for 4.9t^2+340t-2720=0 equation:


Simplifying
4.9t2 + 340t + -2720 = 0

Reorder the terms:
-2720 + 340t + 4.9t2 = 0

Solving
-2720 + 340t + 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'.
-555.1020408 + 69.3877551t + t2 = 0

Move the constant term to the right:

Add '555.1020408' to each side of the equation.
-555.1020408 + 69.3877551t + 555.1020408 + t2 = 0 + 555.1020408

Reorder the terms:
-555.1020408 + 555.1020408 + 69.3877551t + t2 = 0 + 555.1020408

Combine like terms: -555.1020408 + 555.1020408 = 0.0000000
0.0000000 + 69.3877551t + t2 = 0 + 555.1020408
69.3877551t + t2 = 0 + 555.1020408

Combine like terms: 0 + 555.1020408 = 555.1020408
69.3877551t + t2 = 555.1020408

The t term is 69.3877551t.  Take half its coefficient (34.69387755).
Square it (1203.665139) and add it to both sides.

Add '1203.665139' to each side of the equation.
69.3877551t + 1203.665139 + t2 = 555.1020408 + 1203.665139

Reorder the terms:
1203.665139 + 69.3877551t + t2 = 555.1020408 + 1203.665139

Combine like terms: 555.1020408 + 1203.665139 = 1758.7671798
1203.665139 + 69.3877551t + t2 = 1758.7671798

Factor a perfect square on the left side:
(t + 34.69387755)(t + 34.69387755) = 1758.7671798

Calculate the square root of the right side: 41.937658254

Break this problem into two subproblems by setting 
(t + 34.69387755) equal to 41.937658254 and -41.937658254.

Subproblem 1

t + 34.69387755 = 41.937658254 Simplifying t + 34.69387755 = 41.937658254 Reorder the terms: 34.69387755 + t = 41.937658254 Solving 34.69387755 + t = 41.937658254 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-34.69387755' to each side of the equation. 34.69387755 + -34.69387755 + t = 41.937658254 + -34.69387755 Combine like terms: 34.69387755 + -34.69387755 = 0.00000000 0.00000000 + t = 41.937658254 + -34.69387755 t = 41.937658254 + -34.69387755 Combine like terms: 41.937658254 + -34.69387755 = 7.243780704 t = 7.243780704 Simplifying t = 7.243780704

Subproblem 2

t + 34.69387755 = -41.937658254 Simplifying t + 34.69387755 = -41.937658254 Reorder the terms: 34.69387755 + t = -41.937658254 Solving 34.69387755 + t = -41.937658254 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-34.69387755' to each side of the equation. 34.69387755 + -34.69387755 + t = -41.937658254 + -34.69387755 Combine like terms: 34.69387755 + -34.69387755 = 0.00000000 0.00000000 + t = -41.937658254 + -34.69387755 t = -41.937658254 + -34.69387755 Combine like terms: -41.937658254 + -34.69387755 = -76.631535804 t = -76.631535804 Simplifying t = -76.631535804

Solution

The solution to the problem is based on the solutions from the subproblems. t = {7.243780704, -76.631535804}

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