t^2-10t+15=0

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Solution for t^2-10t+15=0 equation:


Simplifying
t2 + -10t + 15 = 0

Reorder the terms:
15 + -10t + t2 = 0

Solving
15 + -10t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '-15' to each side of the equation.
15 + -10t + -15 + t2 = 0 + -15

Reorder the terms:
15 + -15 + -10t + t2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + -10t + t2 = 0 + -15
-10t + t2 = 0 + -15

Combine like terms: 0 + -15 = -15
-10t + t2 = -15

The t term is -10t.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10t + 25 + t2 = -15 + 25

Reorder the terms:
25 + -10t + t2 = -15 + 25

Combine like terms: -15 + 25 = 10
25 + -10t + t2 = 10

Factor a perfect square on the left side:
(t + -5)(t + -5) = 10

Calculate the square root of the right side: 3.16227766

Break this problem into two subproblems by setting 
(t + -5) equal to 3.16227766 and -3.16227766.

Subproblem 1

t + -5 = 3.16227766 Simplifying t + -5 = 3.16227766 Reorder the terms: -5 + t = 3.16227766 Solving -5 + t = 3.16227766 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + t = 3.16227766 + 5 Combine like terms: -5 + 5 = 0 0 + t = 3.16227766 + 5 t = 3.16227766 + 5 Combine like terms: 3.16227766 + 5 = 8.16227766 t = 8.16227766 Simplifying t = 8.16227766

Subproblem 2

t + -5 = -3.16227766 Simplifying t + -5 = -3.16227766 Reorder the terms: -5 + t = -3.16227766 Solving -5 + t = -3.16227766 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + t = -3.16227766 + 5 Combine like terms: -5 + 5 = 0 0 + t = -3.16227766 + 5 t = -3.16227766 + 5 Combine like terms: -3.16227766 + 5 = 1.83772234 t = 1.83772234 Simplifying t = 1.83772234

Solution

The solution to the problem is based on the solutions from the subproblems. t = {8.16227766, 1.83772234}

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