-5t-2=-9t^2

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Solution for -5t-2=-9t^2 equation:


Simplifying
-5t + -2 = -9t2

Reorder the terms:
-2 + -5t = -9t2

Solving
-2 + -5t = -9t2

Solving for variable 't'.

Combine like terms: -9t2 + 9t2 = 0
-2 + -5t + 9t2 = 0

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

Divide each side by '9'.
-0.2222222222 + -0.5555555556t + t2 = 0

Move the constant term to the right:

Add '0.2222222222' to each side of the equation.
-0.2222222222 + -0.5555555556t + 0.2222222222 + t2 = 0 + 0.2222222222

Reorder the terms:
-0.2222222222 + 0.2222222222 + -0.5555555556t + t2 = 0 + 0.2222222222

Combine like terms: -0.2222222222 + 0.2222222222 = 0.0000000000
0.0000000000 + -0.5555555556t + t2 = 0 + 0.2222222222
-0.5555555556t + t2 = 0 + 0.2222222222

Combine like terms: 0 + 0.2222222222 = 0.2222222222
-0.5555555556t + t2 = 0.2222222222

The t term is -0.5555555556t.  Take half its coefficient (-0.2777777778).
Square it (0.07716049384) and add it to both sides.

Add '0.07716049384' to each side of the equation.
-0.5555555556t + 0.07716049384 + t2 = 0.2222222222 + 0.07716049384

Reorder the terms:
0.07716049384 + -0.5555555556t + t2 = 0.2222222222 + 0.07716049384

Combine like terms: 0.2222222222 + 0.07716049384 = 0.29938271604
0.07716049384 + -0.5555555556t + t2 = 0.29938271604

Factor a perfect square on the left side:
(t + -0.2777777778)(t + -0.2777777778) = 0.29938271604

Calculate the square root of the right side: 0.547158767

Break this problem into two subproblems by setting 
(t + -0.2777777778) equal to 0.547158767 and -0.547158767.

Subproblem 1

t + -0.2777777778 = 0.547158767 Simplifying t + -0.2777777778 = 0.547158767 Reorder the terms: -0.2777777778 + t = 0.547158767 Solving -0.2777777778 + t = 0.547158767 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.2777777778' to each side of the equation. -0.2777777778 + 0.2777777778 + t = 0.547158767 + 0.2777777778 Combine like terms: -0.2777777778 + 0.2777777778 = 0.0000000000 0.0000000000 + t = 0.547158767 + 0.2777777778 t = 0.547158767 + 0.2777777778 Combine like terms: 0.547158767 + 0.2777777778 = 0.8249365448 t = 0.8249365448 Simplifying t = 0.8249365448

Subproblem 2

t + -0.2777777778 = -0.547158767 Simplifying t + -0.2777777778 = -0.547158767 Reorder the terms: -0.2777777778 + t = -0.547158767 Solving -0.2777777778 + t = -0.547158767 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.2777777778' to each side of the equation. -0.2777777778 + 0.2777777778 + t = -0.547158767 + 0.2777777778 Combine like terms: -0.2777777778 + 0.2777777778 = 0.0000000000 0.0000000000 + t = -0.547158767 + 0.2777777778 t = -0.547158767 + 0.2777777778 Combine like terms: -0.547158767 + 0.2777777778 = -0.2693809892 t = -0.2693809892 Simplifying t = -0.2693809892

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.8249365448, -0.2693809892}

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