0=294t-4.9t^2-2450

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Solution for 0=294t-4.9t^2-2450 equation:


Simplifying
0 = 294t + -4.9t2 + -2450

Reorder the terms:
0 = -2450 + 294t + -4.9t2

Solving
0 = -2450 + 294t + -4.9t2

Solving for variable 't'.

Combine like terms: 0 + 2450 = 2450
2450 + -294t + 4.9t2 = -2450 + 294t + -4.9t2 + 2450 + -294t + 4.9t2

Reorder the terms:
2450 + -294t + 4.9t2 = -2450 + 2450 + 294t + -294t + -4.9t2 + 4.9t2

Combine like terms: -2450 + 2450 = 0
2450 + -294t + 4.9t2 = 0 + 294t + -294t + -4.9t2 + 4.9t2
2450 + -294t + 4.9t2 = 294t + -294t + -4.9t2 + 4.9t2

Combine like terms: 294t + -294t = 0
2450 + -294t + 4.9t2 = 0 + -4.9t2 + 4.9t2
2450 + -294t + 4.9t2 = -4.9t2 + 4.9t2

Combine like terms: -4.9t2 + 4.9t2 = 0.0
2450 + -294t + 4.9t2 = 0.0

Begin completing the square.  Divide all terms by
4.9 the coefficient of the squared term: 

Divide each side by '4.9'.
500 + -60t + t2 = 0

Move the constant term to the right:

Add '-500' to each side of the equation.
500 + -60t + -500 + t2 = 0 + -500

Reorder the terms:
500 + -500 + -60t + t2 = 0 + -500

Combine like terms: 500 + -500 = 0
0 + -60t + t2 = 0 + -500
-60t + t2 = 0 + -500

Combine like terms: 0 + -500 = -500
-60t + t2 = -500

The t term is -60t.  Take half its coefficient (-30).
Square it (900) and add it to both sides.

Add '900' to each side of the equation.
-60t + 900 + t2 = -500 + 900

Reorder the terms:
900 + -60t + t2 = -500 + 900

Combine like terms: -500 + 900 = 400
900 + -60t + t2 = 400

Factor a perfect square on the left side:
(t + -30)(t + -30) = 400

Calculate the square root of the right side: 20

Break this problem into two subproblems by setting 
(t + -30) equal to 20 and -20.

Subproblem 1

t + -30 = 20 Simplifying t + -30 = 20 Reorder the terms: -30 + t = 20 Solving -30 + t = 20 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + t = 20 + 30 Combine like terms: -30 + 30 = 0 0 + t = 20 + 30 t = 20 + 30 Combine like terms: 20 + 30 = 50 t = 50 Simplifying t = 50

Subproblem 2

t + -30 = -20 Simplifying t + -30 = -20 Reorder the terms: -30 + t = -20 Solving -30 + t = -20 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '30' to each side of the equation. -30 + 30 + t = -20 + 30 Combine like terms: -30 + 30 = 0 0 + t = -20 + 30 t = -20 + 30 Combine like terms: -20 + 30 = 10 t = 10 Simplifying t = 10

Solution

The solution to the problem is based on the solutions from the subproblems. t = {50, 10}

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