t^2-10t+20=

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Solution for t^2-10t+20= equation:


Simplifying
t2 + -10t + 20 = 0

Reorder the terms:
20 + -10t + t2 = 0

Solving
20 + -10t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '-20' to each side of the equation.
20 + -10t + -20 + t2 = 0 + -20

Reorder the terms:
20 + -20 + -10t + t2 = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -10t + t2 = 0 + -20
-10t + t2 = 0 + -20

Combine like terms: 0 + -20 = -20
-10t + t2 = -20

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 = -20 + 25

Reorder the terms:
25 + -10t + t2 = -20 + 25

Combine like terms: -20 + 25 = 5
25 + -10t + t2 = 5

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

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(t + -5) equal to 2.236067978 and -2.236067978.

Subproblem 1

t + -5 = 2.236067978 Simplifying t + -5 = 2.236067978 Reorder the terms: -5 + t = 2.236067978 Solving -5 + t = 2.236067978 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 = 2.236067978 + 5 Combine like terms: -5 + 5 = 0 0 + t = 2.236067978 + 5 t = 2.236067978 + 5 Combine like terms: 2.236067978 + 5 = 7.236067978 t = 7.236067978 Simplifying t = 7.236067978

Subproblem 2

t + -5 = -2.236067978 Simplifying t + -5 = -2.236067978 Reorder the terms: -5 + t = -2.236067978 Solving -5 + t = -2.236067978 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 = -2.236067978 + 5 Combine like terms: -5 + 5 = 0 0 + t = -2.236067978 + 5 t = -2.236067978 + 5 Combine like terms: -2.236067978 + 5 = 2.763932022 t = 2.763932022 Simplifying t = 2.763932022

Solution

The solution to the problem is based on the solutions from the subproblems. t = {7.236067978, 2.763932022}

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