-4.9t^2+4.9t-1.029=0

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Solution for -4.9t^2+4.9t-1.029=0 equation:


Simplifying
-4.9t2 + 4.9t + -1.029 = 0

Reorder the terms:
-1.029 + 4.9t + -4.9t2 = 0

Solving
-1.029 + 4.9t + -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'.
0.21 + -1t + t2 = 0

Move the constant term to the right:

Add '-0.21' to each side of the equation.
0.21 + -1t + -0.21 + t2 = 0 + -0.21

Reorder the terms:
0.21 + -0.21 + -1t + t2 = 0 + -0.21

Combine like terms: 0.21 + -0.21 = 0.00
0.00 + -1t + t2 = 0 + -0.21
-1t + t2 = 0 + -0.21

Combine like terms: 0 + -0.21 = -0.21
-1t + t2 = -0.21

The t term is -1t.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1t + 0.25 + t2 = -0.21 + 0.25

Reorder the terms:
0.25 + -1t + t2 = -0.21 + 0.25

Combine like terms: -0.21 + 0.25 = 0.04
0.25 + -1t + t2 = 0.04

Factor a perfect square on the left side:
(t + -0.5)(t + -0.5) = 0.04

Calculate the square root of the right side: 0.2

Break this problem into two subproblems by setting 
(t + -0.5) equal to 0.2 and -0.2.

Subproblem 1

t + -0.5 = 0.2 Simplifying t + -0.5 = 0.2 Reorder the terms: -0.5 + t = 0.2 Solving -0.5 + t = 0.2 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + t = 0.2 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + t = 0.2 + 0.5 t = 0.2 + 0.5 Combine like terms: 0.2 + 0.5 = 0.7 t = 0.7 Simplifying t = 0.7

Subproblem 2

t + -0.5 = -0.2 Simplifying t + -0.5 = -0.2 Reorder the terms: -0.5 + t = -0.2 Solving -0.5 + t = -0.2 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + t = -0.2 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + t = -0.2 + 0.5 t = -0.2 + 0.5 Combine like terms: -0.2 + 0.5 = 0.3 t = 0.3 Simplifying t = 0.3

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.7, 0.3}

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