4t^2-5t-50=0

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Solution for 4t^2-5t-50=0 equation:


Simplifying
4t2 + -5t + -50 = 0

Reorder the terms:
-50 + -5t + 4t2 = 0

Solving
-50 + -5t + 4t2 = 0

Solving for variable 't'.

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

Divide each side by '4'.
-12.5 + -1.25t + t2 = 0

Move the constant term to the right:

Add '12.5' to each side of the equation.
-12.5 + -1.25t + 12.5 + t2 = 0 + 12.5

Reorder the terms:
-12.5 + 12.5 + -1.25t + t2 = 0 + 12.5

Combine like terms: -12.5 + 12.5 = 0.0
0.0 + -1.25t + t2 = 0 + 12.5
-1.25t + t2 = 0 + 12.5

Combine like terms: 0 + 12.5 = 12.5
-1.25t + t2 = 12.5

The t term is -1.25t.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25t + 0.390625 + t2 = 12.5 + 0.390625

Reorder the terms:
0.390625 + -1.25t + t2 = 12.5 + 0.390625

Combine like terms: 12.5 + 0.390625 = 12.890625
0.390625 + -1.25t + t2 = 12.890625

Factor a perfect square on the left side:
(t + -0.625)(t + -0.625) = 12.890625

Calculate the square root of the right side: 3.590351654

Break this problem into two subproblems by setting 
(t + -0.625) equal to 3.590351654 and -3.590351654.

Subproblem 1

t + -0.625 = 3.590351654 Simplifying t + -0.625 = 3.590351654 Reorder the terms: -0.625 + t = 3.590351654 Solving -0.625 + t = 3.590351654 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + t = 3.590351654 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + t = 3.590351654 + 0.625 t = 3.590351654 + 0.625 Combine like terms: 3.590351654 + 0.625 = 4.215351654 t = 4.215351654 Simplifying t = 4.215351654

Subproblem 2

t + -0.625 = -3.590351654 Simplifying t + -0.625 = -3.590351654 Reorder the terms: -0.625 + t = -3.590351654 Solving -0.625 + t = -3.590351654 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + t = -3.590351654 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + t = -3.590351654 + 0.625 t = -3.590351654 + 0.625 Combine like terms: -3.590351654 + 0.625 = -2.965351654 t = -2.965351654 Simplifying t = -2.965351654

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.215351654, -2.965351654}

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