49t^2+30t-75=0

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Solution for 49t^2+30t-75=0 equation:


Simplifying
49t2 + 30t + -75 = 0

Reorder the terms:
-75 + 30t + 49t2 = 0

Solving
-75 + 30t + 49t2 = 0

Solving for variable 't'.

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

Divide each side by '49'.
-1.530612245 + 0.612244898t + t2 = 0

Move the constant term to the right:

Add '1.530612245' to each side of the equation.
-1.530612245 + 0.612244898t + 1.530612245 + t2 = 0 + 1.530612245

Reorder the terms:
-1.530612245 + 1.530612245 + 0.612244898t + t2 = 0 + 1.530612245

Combine like terms: -1.530612245 + 1.530612245 = 0.000000000
0.000000000 + 0.612244898t + t2 = 0 + 1.530612245
0.612244898t + t2 = 0 + 1.530612245

Combine like terms: 0 + 1.530612245 = 1.530612245
0.612244898t + t2 = 1.530612245

The t term is 0.612244898t.  Take half its coefficient (0.306122449).
Square it (0.09371095378) and add it to both sides.

Add '0.09371095378' to each side of the equation.
0.612244898t + 0.09371095378 + t2 = 1.530612245 + 0.09371095378

Reorder the terms:
0.09371095378 + 0.612244898t + t2 = 1.530612245 + 0.09371095378

Combine like terms: 1.530612245 + 0.09371095378 = 1.62432319878
0.09371095378 + 0.612244898t + t2 = 1.62432319878

Factor a perfect square on the left side:
(t + 0.306122449)(t + 0.306122449) = 1.62432319878

Calculate the square root of the right side: 1.274489387

Break this problem into two subproblems by setting 
(t + 0.306122449) equal to 1.274489387 and -1.274489387.

Subproblem 1

t + 0.306122449 = 1.274489387 Simplifying t + 0.306122449 = 1.274489387 Reorder the terms: 0.306122449 + t = 1.274489387 Solving 0.306122449 + t = 1.274489387 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.306122449' to each side of the equation. 0.306122449 + -0.306122449 + t = 1.274489387 + -0.306122449 Combine like terms: 0.306122449 + -0.306122449 = 0.000000000 0.000000000 + t = 1.274489387 + -0.306122449 t = 1.274489387 + -0.306122449 Combine like terms: 1.274489387 + -0.306122449 = 0.968366938 t = 0.968366938 Simplifying t = 0.968366938

Subproblem 2

t + 0.306122449 = -1.274489387 Simplifying t + 0.306122449 = -1.274489387 Reorder the terms: 0.306122449 + t = -1.274489387 Solving 0.306122449 + t = -1.274489387 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.306122449' to each side of the equation. 0.306122449 + -0.306122449 + t = -1.274489387 + -0.306122449 Combine like terms: 0.306122449 + -0.306122449 = 0.000000000 0.000000000 + t = -1.274489387 + -0.306122449 t = -1.274489387 + -0.306122449 Combine like terms: -1.274489387 + -0.306122449 = -1.580611836 t = -1.580611836 Simplifying t = -1.580611836

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.968366938, -1.580611836}

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