-5t^2+26t=-45

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Solution for -5t^2+26t=-45 equation:


Simplifying
-5t2 + 26t = -45

Reorder the terms:
26t + -5t2 = -45

Solving
26t + -5t2 = -45

Solving for variable 't'.

Reorder the terms:
45 + 26t + -5t2 = -45 + 45

Combine like terms: -45 + 45 = 0
45 + 26t + -5t2 = 0

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

Divide each side by '-5'.
-9 + -5.2t + t2 = 0

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + -5.2t + 9 + t2 = 0 + 9

Reorder the terms:
-9 + 9 + -5.2t + t2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + -5.2t + t2 = 0 + 9
-5.2t + t2 = 0 + 9

Combine like terms: 0 + 9 = 9
-5.2t + t2 = 9

The t term is -5.2t.  Take half its coefficient (-2.6).
Square it (6.76) and add it to both sides.

Add '6.76' to each side of the equation.
-5.2t + 6.76 + t2 = 9 + 6.76

Reorder the terms:
6.76 + -5.2t + t2 = 9 + 6.76

Combine like terms: 9 + 6.76 = 15.76
6.76 + -5.2t + t2 = 15.76

Factor a perfect square on the left side:
(t + -2.6)(t + -2.6) = 15.76

Calculate the square root of the right side: 3.969886648

Break this problem into two subproblems by setting 
(t + -2.6) equal to 3.969886648 and -3.969886648.

Subproblem 1

t + -2.6 = 3.969886648 Simplifying t + -2.6 = 3.969886648 Reorder the terms: -2.6 + t = 3.969886648 Solving -2.6 + t = 3.969886648 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.6' to each side of the equation. -2.6 + 2.6 + t = 3.969886648 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + t = 3.969886648 + 2.6 t = 3.969886648 + 2.6 Combine like terms: 3.969886648 + 2.6 = 6.569886648 t = 6.569886648 Simplifying t = 6.569886648

Subproblem 2

t + -2.6 = -3.969886648 Simplifying t + -2.6 = -3.969886648 Reorder the terms: -2.6 + t = -3.969886648 Solving -2.6 + t = -3.969886648 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.6' to each side of the equation. -2.6 + 2.6 + t = -3.969886648 + 2.6 Combine like terms: -2.6 + 2.6 = 0.0 0.0 + t = -3.969886648 + 2.6 t = -3.969886648 + 2.6 Combine like terms: -3.969886648 + 2.6 = -1.369886648 t = -1.369886648 Simplifying t = -1.369886648

Solution

The solution to the problem is based on the solutions from the subproblems. t = {6.569886648, -1.369886648}

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