t=-4.9t^2+30.5t+9.3

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Solution for t=-4.9t^2+30.5t+9.3 equation:


Simplifying
t = -4.9t2 + 30.5t + 9.3

Reorder the terms:
t = 9.3 + 30.5t + -4.9t2

Solving
t = 9.3 + 30.5t + -4.9t2

Solving for variable 't'.

Reorder the terms:
-9.3 + t + -30.5t + 4.9t2 = 9.3 + 30.5t + -4.9t2 + -9.3 + -30.5t + 4.9t2

Combine like terms: t + -30.5t = -29.5t
-9.3 + -29.5t + 4.9t2 = 9.3 + 30.5t + -4.9t2 + -9.3 + -30.5t + 4.9t2

Reorder the terms:
-9.3 + -29.5t + 4.9t2 = 9.3 + -9.3 + 30.5t + -30.5t + -4.9t2 + 4.9t2

Combine like terms: 9.3 + -9.3 = 0.0
-9.3 + -29.5t + 4.9t2 = 0.0 + 30.5t + -30.5t + -4.9t2 + 4.9t2
-9.3 + -29.5t + 4.9t2 = 30.5t + -30.5t + -4.9t2 + 4.9t2

Combine like terms: 30.5t + -30.5t = 0.0
-9.3 + -29.5t + 4.9t2 = 0.0 + -4.9t2 + 4.9t2
-9.3 + -29.5t + 4.9t2 = -4.9t2 + 4.9t2

Combine like terms: -4.9t2 + 4.9t2 = 0.0
-9.3 + -29.5t + 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'.
-1.897959184 + -6.020408163t + t2 = 0

Move the constant term to the right:

Add '1.897959184' to each side of the equation.
-1.897959184 + -6.020408163t + 1.897959184 + t2 = 0 + 1.897959184

Reorder the terms:
-1.897959184 + 1.897959184 + -6.020408163t + t2 = 0 + 1.897959184

Combine like terms: -1.897959184 + 1.897959184 = 0.000000000
0.000000000 + -6.020408163t + t2 = 0 + 1.897959184
-6.020408163t + t2 = 0 + 1.897959184

Combine like terms: 0 + 1.897959184 = 1.897959184
-6.020408163t + t2 = 1.897959184

The t term is -6.020408163t.  Take half its coefficient (-3.010204082).
Square it (9.061328615) and add it to both sides.

Add '9.061328615' to each side of the equation.
-6.020408163t + 9.061328615 + t2 = 1.897959184 + 9.061328615

Reorder the terms:
9.061328615 + -6.020408163t + t2 = 1.897959184 + 9.061328615

Combine like terms: 1.897959184 + 9.061328615 = 10.959287799
9.061328615 + -6.020408163t + t2 = 10.959287799

Factor a perfect square on the left side:
(t + -3.010204082)(t + -3.010204082) = 10.959287799

Calculate the square root of the right side: 3.310481506

Break this problem into two subproblems by setting 
(t + -3.010204082) equal to 3.310481506 and -3.310481506.

Subproblem 1

t + -3.010204082 = 3.310481506 Simplifying t + -3.010204082 = 3.310481506 Reorder the terms: -3.010204082 + t = 3.310481506 Solving -3.010204082 + t = 3.310481506 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.010204082' to each side of the equation. -3.010204082 + 3.010204082 + t = 3.310481506 + 3.010204082 Combine like terms: -3.010204082 + 3.010204082 = 0.000000000 0.000000000 + t = 3.310481506 + 3.010204082 t = 3.310481506 + 3.010204082 Combine like terms: 3.310481506 + 3.010204082 = 6.320685588 t = 6.320685588 Simplifying t = 6.320685588

Subproblem 2

t + -3.010204082 = -3.310481506 Simplifying t + -3.010204082 = -3.310481506 Reorder the terms: -3.010204082 + t = -3.310481506 Solving -3.010204082 + t = -3.310481506 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.010204082' to each side of the equation. -3.010204082 + 3.010204082 + t = -3.310481506 + 3.010204082 Combine like terms: -3.010204082 + 3.010204082 = 0.000000000 0.000000000 + t = -3.310481506 + 3.010204082 t = -3.310481506 + 3.010204082 Combine like terms: -3.310481506 + 3.010204082 = -0.300277424 t = -0.300277424 Simplifying t = -0.300277424

Solution

The solution to the problem is based on the solutions from the subproblems. t = {6.320685588, -0.300277424}

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