-4.9t^2+43.4t+6.3=0

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Solution for -4.9t^2+43.4t+6.3=0 equation:


Simplifying
-4.9t2 + 43.4t + 6.3 = 0

Reorder the terms:
6.3 + 43.4t + -4.9t2 = 0

Solving
6.3 + 43.4t + -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'.
-1.285714286 + -8.857142857t + t2 = 0

Move the constant term to the right:

Add '1.285714286' to each side of the equation.
-1.285714286 + -8.857142857t + 1.285714286 + t2 = 0 + 1.285714286

Reorder the terms:
-1.285714286 + 1.285714286 + -8.857142857t + t2 = 0 + 1.285714286

Combine like terms: -1.285714286 + 1.285714286 = 0.000000000
0.000000000 + -8.857142857t + t2 = 0 + 1.285714286
-8.857142857t + t2 = 0 + 1.285714286

Combine like terms: 0 + 1.285714286 = 1.285714286
-8.857142857t + t2 = 1.285714286

The t term is -8.857142857t.  Take half its coefficient (-4.428571429).
Square it (19.61224490) and add it to both sides.

Add '19.61224490' to each side of the equation.
-8.857142857t + 19.61224490 + t2 = 1.285714286 + 19.61224490

Reorder the terms:
19.61224490 + -8.857142857t + t2 = 1.285714286 + 19.61224490

Combine like terms: 1.285714286 + 19.61224490 = 20.897959186
19.61224490 + -8.857142857t + t2 = 20.897959186

Factor a perfect square on the left side:
(t + -4.428571429)(t + -4.428571429) = 20.897959186

Calculate the square root of the right side: 4.571428572

Break this problem into two subproblems by setting 
(t + -4.428571429) equal to 4.571428572 and -4.571428572.

Subproblem 1

t + -4.428571429 = 4.571428572 Simplifying t + -4.428571429 = 4.571428572 Reorder the terms: -4.428571429 + t = 4.571428572 Solving -4.428571429 + t = 4.571428572 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.428571429' to each side of the equation. -4.428571429 + 4.428571429 + t = 4.571428572 + 4.428571429 Combine like terms: -4.428571429 + 4.428571429 = 0.000000000 0.000000000 + t = 4.571428572 + 4.428571429 t = 4.571428572 + 4.428571429 Combine like terms: 4.571428572 + 4.428571429 = 9.000000001 t = 9.000000001 Simplifying t = 9.000000001

Subproblem 2

t + -4.428571429 = -4.571428572 Simplifying t + -4.428571429 = -4.571428572 Reorder the terms: -4.428571429 + t = -4.571428572 Solving -4.428571429 + t = -4.571428572 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.428571429' to each side of the equation. -4.428571429 + 4.428571429 + t = -4.571428572 + 4.428571429 Combine like terms: -4.428571429 + 4.428571429 = 0.000000000 0.000000000 + t = -4.571428572 + 4.428571429 t = -4.571428572 + 4.428571429 Combine like terms: -4.571428572 + 4.428571429 = -0.142857143 t = -0.142857143 Simplifying t = -0.142857143

Solution

The solution to the problem is based on the solutions from the subproblems. t = {9.000000001, -0.142857143}

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