-16t^2-22t+425=0

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Solution for -16t^2-22t+425=0 equation:


Simplifying
-16t2 + -22t + 425 = 0

Reorder the terms:
425 + -22t + -16t2 = 0

Solving
425 + -22t + -16t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-26.5625 + 1.375t + t2 = 0

Move the constant term to the right:

Add '26.5625' to each side of the equation.
-26.5625 + 1.375t + 26.5625 + t2 = 0 + 26.5625

Reorder the terms:
-26.5625 + 26.5625 + 1.375t + t2 = 0 + 26.5625

Combine like terms: -26.5625 + 26.5625 = 0.0000
0.0000 + 1.375t + t2 = 0 + 26.5625
1.375t + t2 = 0 + 26.5625

Combine like terms: 0 + 26.5625 = 26.5625
1.375t + t2 = 26.5625

The t term is 1.375t.  Take half its coefficient (0.6875).
Square it (0.47265625) and add it to both sides.

Add '0.47265625' to each side of the equation.
1.375t + 0.47265625 + t2 = 26.5625 + 0.47265625

Reorder the terms:
0.47265625 + 1.375t + t2 = 26.5625 + 0.47265625

Combine like terms: 26.5625 + 0.47265625 = 27.03515625
0.47265625 + 1.375t + t2 = 27.03515625

Factor a perfect square on the left side:
(t + 0.6875)(t + 0.6875) = 27.03515625

Calculate the square root of the right side: 5.199534234

Break this problem into two subproblems by setting 
(t + 0.6875) equal to 5.199534234 and -5.199534234.

Subproblem 1

t + 0.6875 = 5.199534234 Simplifying t + 0.6875 = 5.199534234 Reorder the terms: 0.6875 + t = 5.199534234 Solving 0.6875 + t = 5.199534234 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.6875' to each side of the equation. 0.6875 + -0.6875 + t = 5.199534234 + -0.6875 Combine like terms: 0.6875 + -0.6875 = 0.0000 0.0000 + t = 5.199534234 + -0.6875 t = 5.199534234 + -0.6875 Combine like terms: 5.199534234 + -0.6875 = 4.512034234 t = 4.512034234 Simplifying t = 4.512034234

Subproblem 2

t + 0.6875 = -5.199534234 Simplifying t + 0.6875 = -5.199534234 Reorder the terms: 0.6875 + t = -5.199534234 Solving 0.6875 + t = -5.199534234 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.6875' to each side of the equation. 0.6875 + -0.6875 + t = -5.199534234 + -0.6875 Combine like terms: 0.6875 + -0.6875 = 0.0000 0.0000 + t = -5.199534234 + -0.6875 t = -5.199534234 + -0.6875 Combine like terms: -5.199534234 + -0.6875 = -5.887034234 t = -5.887034234 Simplifying t = -5.887034234

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.512034234, -5.887034234}

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