4.9t^2+14t-10=0

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Solution for 4.9t^2+14t-10=0 equation:


Simplifying
4.9t2 + 14t + -10 = 0

Reorder the terms:
-10 + 14t + 4.9t2 = 0

Solving
-10 + 14t + 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 + 2.857142857t + t2 = 0

Move the constant term to the right:

Add '2.040816327' to each side of the equation.
-2.040816327 + 2.857142857t + 2.040816327 + t2 = 0 + 2.040816327

Reorder the terms:
-2.040816327 + 2.040816327 + 2.857142857t + t2 = 0 + 2.040816327

Combine like terms: -2.040816327 + 2.040816327 = 0.000000000
0.000000000 + 2.857142857t + t2 = 0 + 2.040816327
2.857142857t + t2 = 0 + 2.040816327

Combine like terms: 0 + 2.040816327 = 2.040816327
2.857142857t + t2 = 2.040816327

The t term is 2.857142857t.  Take half its coefficient (1.428571429).
Square it (2.040816328) and add it to both sides.

Add '2.040816328' to each side of the equation.
2.857142857t + 2.040816328 + t2 = 2.040816327 + 2.040816328

Reorder the terms:
2.040816328 + 2.857142857t + t2 = 2.040816327 + 2.040816328

Combine like terms: 2.040816327 + 2.040816328 = 4.081632655
2.040816328 + 2.857142857t + t2 = 4.081632655

Factor a perfect square on the left side:
(t + 1.428571429)(t + 1.428571429) = 4.081632655

Calculate the square root of the right side: 2.02030509

Break this problem into two subproblems by setting 
(t + 1.428571429) equal to 2.02030509 and -2.02030509.

Subproblem 1

t + 1.428571429 = 2.02030509 Simplifying t + 1.428571429 = 2.02030509 Reorder the terms: 1.428571429 + t = 2.02030509 Solving 1.428571429 + t = 2.02030509 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.428571429' to each side of the equation. 1.428571429 + -1.428571429 + t = 2.02030509 + -1.428571429 Combine like terms: 1.428571429 + -1.428571429 = 0.000000000 0.000000000 + t = 2.02030509 + -1.428571429 t = 2.02030509 + -1.428571429 Combine like terms: 2.02030509 + -1.428571429 = 0.591733661 t = 0.591733661 Simplifying t = 0.591733661

Subproblem 2

t + 1.428571429 = -2.02030509 Simplifying t + 1.428571429 = -2.02030509 Reorder the terms: 1.428571429 + t = -2.02030509 Solving 1.428571429 + t = -2.02030509 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.428571429' to each side of the equation. 1.428571429 + -1.428571429 + t = -2.02030509 + -1.428571429 Combine like terms: 1.428571429 + -1.428571429 = 0.000000000 0.000000000 + t = -2.02030509 + -1.428571429 t = -2.02030509 + -1.428571429 Combine like terms: -2.02030509 + -1.428571429 = -3.448876519 t = -3.448876519 Simplifying t = -3.448876519

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.591733661, -3.448876519}

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