t^2-2t=(t+3)

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Solution for t^2-2t=(t+3) equation:


Simplifying
t2 + -2t = (t + 3)

Reorder the terms:
-2t + t2 = (t + 3)

Reorder the terms:
-2t + t2 = (3 + t)

Remove parenthesis around (3 + t)
-2t + t2 = 3 + t

Solving
-2t + t2 = 3 + t

Solving for variable 't'.

Reorder the terms:
-3 + -2t + -1t + t2 = 3 + t + -3 + -1t

Combine like terms: -2t + -1t = -3t
-3 + -3t + t2 = 3 + t + -3 + -1t

Reorder the terms:
-3 + -3t + t2 = 3 + -3 + t + -1t

Combine like terms: 3 + -3 = 0
-3 + -3t + t2 = 0 + t + -1t
-3 + -3t + t2 = t + -1t

Combine like terms: t + -1t = 0
-3 + -3t + t2 = 0

Begin completing the square.

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -3t + 3 + t2 = 0 + 3

Reorder the terms:
-3 + 3 + -3t + t2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -3t + t2 = 0 + 3
-3t + t2 = 0 + 3

Combine like terms: 0 + 3 = 3
-3t + t2 = 3

The t term is -3t.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3t + 2.25 + t2 = 3 + 2.25

Reorder the terms:
2.25 + -3t + t2 = 3 + 2.25

Combine like terms: 3 + 2.25 = 5.25
2.25 + -3t + t2 = 5.25

Factor a perfect square on the left side:
(t + -1.5)(t + -1.5) = 5.25

Calculate the square root of the right side: 2.291287847

Break this problem into two subproblems by setting 
(t + -1.5) equal to 2.291287847 and -2.291287847.

Subproblem 1

t + -1.5 = 2.291287847 Simplifying t + -1.5 = 2.291287847 Reorder the terms: -1.5 + t = 2.291287847 Solving -1.5 + t = 2.291287847 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + t = 2.291287847 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + t = 2.291287847 + 1.5 t = 2.291287847 + 1.5 Combine like terms: 2.291287847 + 1.5 = 3.791287847 t = 3.791287847 Simplifying t = 3.791287847

Subproblem 2

t + -1.5 = -2.291287847 Simplifying t + -1.5 = -2.291287847 Reorder the terms: -1.5 + t = -2.291287847 Solving -1.5 + t = -2.291287847 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + t = -2.291287847 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + t = -2.291287847 + 1.5 t = -2.291287847 + 1.5 Combine like terms: -2.291287847 + 1.5 = -0.791287847 t = -0.791287847 Simplifying t = -0.791287847

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.791287847, -0.791287847}

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