27=47t-5t^2

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Solution for 27=47t-5t^2 equation:


Simplifying
27 = 47t + -5t2

Solving
27 = 47t + -5t2

Solving for variable 't'.

Reorder the terms:
27 + -47t + 5t2 = 47t + -47t + -5t2 + 5t2

Combine like terms: 47t + -47t = 0
27 + -47t + 5t2 = 0 + -5t2 + 5t2
27 + -47t + 5t2 = -5t2 + 5t2

Combine like terms: -5t2 + 5t2 = 0
27 + -47t + 5t2 = 0

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

Divide each side by '5'.
5.4 + -9.4t + t2 = 0

Move the constant term to the right:

Add '-5.4' to each side of the equation.
5.4 + -9.4t + -5.4 + t2 = 0 + -5.4

Reorder the terms:
5.4 + -5.4 + -9.4t + t2 = 0 + -5.4

Combine like terms: 5.4 + -5.4 = 0.0
0.0 + -9.4t + t2 = 0 + -5.4
-9.4t + t2 = 0 + -5.4

Combine like terms: 0 + -5.4 = -5.4
-9.4t + t2 = -5.4

The t term is -9.4t.  Take half its coefficient (-4.7).
Square it (22.09) and add it to both sides.

Add '22.09' to each side of the equation.
-9.4t + 22.09 + t2 = -5.4 + 22.09

Reorder the terms:
22.09 + -9.4t + t2 = -5.4 + 22.09

Combine like terms: -5.4 + 22.09 = 16.69
22.09 + -9.4t + t2 = 16.69

Factor a perfect square on the left side:
(t + -4.7)(t + -4.7) = 16.69

Calculate the square root of the right side: 4.085339643

Break this problem into two subproblems by setting 
(t + -4.7) equal to 4.085339643 and -4.085339643.

Subproblem 1

t + -4.7 = 4.085339643 Simplifying t + -4.7 = 4.085339643 Reorder the terms: -4.7 + t = 4.085339643 Solving -4.7 + t = 4.085339643 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.7' to each side of the equation. -4.7 + 4.7 + t = 4.085339643 + 4.7 Combine like terms: -4.7 + 4.7 = 0.0 0.0 + t = 4.085339643 + 4.7 t = 4.085339643 + 4.7 Combine like terms: 4.085339643 + 4.7 = 8.785339643 t = 8.785339643 Simplifying t = 8.785339643

Subproblem 2

t + -4.7 = -4.085339643 Simplifying t + -4.7 = -4.085339643 Reorder the terms: -4.7 + t = -4.085339643 Solving -4.7 + t = -4.085339643 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '4.7' to each side of the equation. -4.7 + 4.7 + t = -4.085339643 + 4.7 Combine like terms: -4.7 + 4.7 = 0.0 0.0 + t = -4.085339643 + 4.7 t = -4.085339643 + 4.7 Combine like terms: -4.085339643 + 4.7 = 0.614660357 t = 0.614660357 Simplifying t = 0.614660357

Solution

The solution to the problem is based on the solutions from the subproblems. t = {8.785339643, 0.614660357}

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