4.9t*t-5t=300

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Solution for 4.9t*t-5t=300 equation:


Simplifying
4.9t * t + -5t = 300

Multiply t * t
4.9t2 + -5t = 300

Reorder the terms:
-5t + 4.9t2 = 300

Solving
-5t + 4.9t2 = 300

Solving for variable 't'.

Reorder the terms:
-300 + -5t + 4.9t2 = 300 + -300

Combine like terms: 300 + -300 = 0
-300 + -5t + 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'.
-61.2244898 + -1.020408163t + t2 = 0

Move the constant term to the right:

Add '61.2244898' to each side of the equation.
-61.2244898 + -1.020408163t + 61.2244898 + t2 = 0 + 61.2244898

Reorder the terms:
-61.2244898 + 61.2244898 + -1.020408163t + t2 = 0 + 61.2244898

Combine like terms: -61.2244898 + 61.2244898 = 0.0000000
0.0000000 + -1.020408163t + t2 = 0 + 61.2244898
-1.020408163t + t2 = 0 + 61.2244898

Combine like terms: 0 + 61.2244898 = 61.2244898
-1.020408163t + t2 = 61.2244898

The t term is -1.020408163t.  Take half its coefficient (-0.5102040815).
Square it (0.2603082048) and add it to both sides.

Add '0.2603082048' to each side of the equation.
-1.020408163t + 0.2603082048 + t2 = 61.2244898 + 0.2603082048

Reorder the terms:
0.2603082048 + -1.020408163t + t2 = 61.2244898 + 0.2603082048

Combine like terms: 61.2244898 + 0.2603082048 = 61.4847980048
0.2603082048 + -1.020408163t + t2 = 61.4847980048

Factor a perfect square on the left side:
(t + -0.5102040815)(t + -0.5102040815) = 61.4847980048

Calculate the square root of the right side: 7.841224267

Break this problem into two subproblems by setting 
(t + -0.5102040815) equal to 7.841224267 and -7.841224267.

Subproblem 1

t + -0.5102040815 = 7.841224267 Simplifying t + -0.5102040815 = 7.841224267 Reorder the terms: -0.5102040815 + t = 7.841224267 Solving -0.5102040815 + t = 7.841224267 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5102040815' to each side of the equation. -0.5102040815 + 0.5102040815 + t = 7.841224267 + 0.5102040815 Combine like terms: -0.5102040815 + 0.5102040815 = 0.0000000000 0.0000000000 + t = 7.841224267 + 0.5102040815 t = 7.841224267 + 0.5102040815 Combine like terms: 7.841224267 + 0.5102040815 = 8.3514283485 t = 8.3514283485 Simplifying t = 8.3514283485

Subproblem 2

t + -0.5102040815 = -7.841224267 Simplifying t + -0.5102040815 = -7.841224267 Reorder the terms: -0.5102040815 + t = -7.841224267 Solving -0.5102040815 + t = -7.841224267 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5102040815' to each side of the equation. -0.5102040815 + 0.5102040815 + t = -7.841224267 + 0.5102040815 Combine like terms: -0.5102040815 + 0.5102040815 = 0.0000000000 0.0000000000 + t = -7.841224267 + 0.5102040815 t = -7.841224267 + 0.5102040815 Combine like terms: -7.841224267 + 0.5102040815 = -7.3310201855 t = -7.3310201855 Simplifying t = -7.3310201855

Solution

The solution to the problem is based on the solutions from the subproblems. t = {8.3514283485, -7.3310201855}

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