1.75t^2-4t+1=0

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Solution for 1.75t^2-4t+1=0 equation:


Simplifying
1.75t2 + -4t + 1 = 0

Reorder the terms:
1 + -4t + 1.75t2 = 0

Solving
1 + -4t + 1.75t2 = 0

Solving for variable 't'.

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

Divide each side by '1.75'.
0.5714285714 + -2.285714286t + t2 = 0

Move the constant term to the right:

Add '-0.5714285714' to each side of the equation.
0.5714285714 + -2.285714286t + -0.5714285714 + t2 = 0 + -0.5714285714

Reorder the terms:
0.5714285714 + -0.5714285714 + -2.285714286t + t2 = 0 + -0.5714285714

Combine like terms: 0.5714285714 + -0.5714285714 = 0.0000000000
0.0000000000 + -2.285714286t + t2 = 0 + -0.5714285714
-2.285714286t + t2 = 0 + -0.5714285714

Combine like terms: 0 + -0.5714285714 = -0.5714285714
-2.285714286t + t2 = -0.5714285714

The t term is -2.285714286t.  Take half its coefficient (-1.142857143).
Square it (1.306122449) and add it to both sides.

Add '1.306122449' to each side of the equation.
-2.285714286t + 1.306122449 + t2 = -0.5714285714 + 1.306122449

Reorder the terms:
1.306122449 + -2.285714286t + t2 = -0.5714285714 + 1.306122449

Combine like terms: -0.5714285714 + 1.306122449 = 0.7346938776
1.306122449 + -2.285714286t + t2 = 0.7346938776

Factor a perfect square on the left side:
(t + -1.142857143)(t + -1.142857143) = 0.7346938776

Calculate the square root of the right side: 0.857142857

Break this problem into two subproblems by setting 
(t + -1.142857143) equal to 0.857142857 and -0.857142857.

Subproblem 1

t + -1.142857143 = 0.857142857 Simplifying t + -1.142857143 = 0.857142857 Reorder the terms: -1.142857143 + t = 0.857142857 Solving -1.142857143 + t = 0.857142857 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.142857143' to each side of the equation. -1.142857143 + 1.142857143 + t = 0.857142857 + 1.142857143 Combine like terms: -1.142857143 + 1.142857143 = 0.000000000 0.000000000 + t = 0.857142857 + 1.142857143 t = 0.857142857 + 1.142857143 Combine like terms: 0.857142857 + 1.142857143 = 2 t = 2 Simplifying t = 2

Subproblem 2

t + -1.142857143 = -0.857142857 Simplifying t + -1.142857143 = -0.857142857 Reorder the terms: -1.142857143 + t = -0.857142857 Solving -1.142857143 + t = -0.857142857 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.142857143' to each side of the equation. -1.142857143 + 1.142857143 + t = -0.857142857 + 1.142857143 Combine like terms: -1.142857143 + 1.142857143 = 0.000000000 0.000000000 + t = -0.857142857 + 1.142857143 t = -0.857142857 + 1.142857143 Combine like terms: -0.857142857 + 1.142857143 = 0.285714286 t = 0.285714286 Simplifying t = 0.285714286

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2, 0.285714286}

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