2t^2-11t+7=

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Solution for 2t^2-11t+7= equation:


Simplifying
2t2 + -11t + 7 = 0

Reorder the terms:
7 + -11t + 2t2 = 0

Solving
7 + -11t + 2t2 = 0

Solving for variable 't'.

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

Divide each side by '2'.
3.5 + -5.5t + t2 = 0

Move the constant term to the right:

Add '-3.5' to each side of the equation.
3.5 + -5.5t + -3.5 + t2 = 0 + -3.5

Reorder the terms:
3.5 + -3.5 + -5.5t + t2 = 0 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + -5.5t + t2 = 0 + -3.5
-5.5t + t2 = 0 + -3.5

Combine like terms: 0 + -3.5 = -3.5
-5.5t + t2 = -3.5

The t term is -5.5t.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5t + 7.5625 + t2 = -3.5 + 7.5625

Reorder the terms:
7.5625 + -5.5t + t2 = -3.5 + 7.5625

Combine like terms: -3.5 + 7.5625 = 4.0625
7.5625 + -5.5t + t2 = 4.0625

Factor a perfect square on the left side:
(t + -2.75)(t + -2.75) = 4.0625

Calculate the square root of the right side: 2.015564437

Break this problem into two subproblems by setting 
(t + -2.75) equal to 2.015564437 and -2.015564437.

Subproblem 1

t + -2.75 = 2.015564437 Simplifying t + -2.75 = 2.015564437 Reorder the terms: -2.75 + t = 2.015564437 Solving -2.75 + t = 2.015564437 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + t = 2.015564437 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + t = 2.015564437 + 2.75 t = 2.015564437 + 2.75 Combine like terms: 2.015564437 + 2.75 = 4.765564437 t = 4.765564437 Simplifying t = 4.765564437

Subproblem 2

t + -2.75 = -2.015564437 Simplifying t + -2.75 = -2.015564437 Reorder the terms: -2.75 + t = -2.015564437 Solving -2.75 + t = -2.015564437 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + t = -2.015564437 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + t = -2.015564437 + 2.75 t = -2.015564437 + 2.75 Combine like terms: -2.015564437 + 2.75 = 0.734435563 t = 0.734435563 Simplifying t = 0.734435563

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.765564437, 0.734435563}

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