4t^2-3t-16=0

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Solution for 4t^2-3t-16=0 equation:


Simplifying
4t2 + -3t + -16 = 0

Reorder the terms:
-16 + -3t + 4t2 = 0

Solving
-16 + -3t + 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'.
-4 + -0.75t + t2 = 0

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + -0.75t + 4 + t2 = 0 + 4

Reorder the terms:
-4 + 4 + -0.75t + t2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -0.75t + t2 = 0 + 4
-0.75t + t2 = 0 + 4

Combine like terms: 0 + 4 = 4
-0.75t + t2 = 4

The t term is -0.75t.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75t + 0.140625 + t2 = 4 + 0.140625

Reorder the terms:
0.140625 + -0.75t + t2 = 4 + 0.140625

Combine like terms: 4 + 0.140625 = 4.140625
0.140625 + -0.75t + t2 = 4.140625

Factor a perfect square on the left side:
(t + -0.375)(t + -0.375) = 4.140625

Calculate the square root of the right side: 2.034852575

Break this problem into two subproblems by setting 
(t + -0.375) equal to 2.034852575 and -2.034852575.

Subproblem 1

t + -0.375 = 2.034852575 Simplifying t + -0.375 = 2.034852575 Reorder the terms: -0.375 + t = 2.034852575 Solving -0.375 + t = 2.034852575 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + t = 2.034852575 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + t = 2.034852575 + 0.375 t = 2.034852575 + 0.375 Combine like terms: 2.034852575 + 0.375 = 2.409852575 t = 2.409852575 Simplifying t = 2.409852575

Subproblem 2

t + -0.375 = -2.034852575 Simplifying t + -0.375 = -2.034852575 Reorder the terms: -0.375 + t = -2.034852575 Solving -0.375 + t = -2.034852575 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + t = -2.034852575 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + t = -2.034852575 + 0.375 t = -2.034852575 + 0.375 Combine like terms: -2.034852575 + 0.375 = -1.659852575 t = -1.659852575 Simplifying t = -1.659852575

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.409852575, -1.659852575}

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