-16t^2+70t+5=0

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Solution for -16t^2+70t+5=0 equation:


Simplifying
-16t2 + 70t + 5 = 0

Reorder the terms:
5 + 70t + -16t2 = 0

Solving
5 + 70t + -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'.
-0.3125 + -4.375t + t2 = 0

Move the constant term to the right:

Add '0.3125' to each side of the equation.
-0.3125 + -4.375t + 0.3125 + t2 = 0 + 0.3125

Reorder the terms:
-0.3125 + 0.3125 + -4.375t + t2 = 0 + 0.3125

Combine like terms: -0.3125 + 0.3125 = 0.0000
0.0000 + -4.375t + t2 = 0 + 0.3125
-4.375t + t2 = 0 + 0.3125

Combine like terms: 0 + 0.3125 = 0.3125
-4.375t + t2 = 0.3125

The t term is -4.375t.  Take half its coefficient (-2.1875).
Square it (4.78515625) and add it to both sides.

Add '4.78515625' to each side of the equation.
-4.375t + 4.78515625 + t2 = 0.3125 + 4.78515625

Reorder the terms:
4.78515625 + -4.375t + t2 = 0.3125 + 4.78515625

Combine like terms: 0.3125 + 4.78515625 = 5.09765625
4.78515625 + -4.375t + t2 = 5.09765625

Factor a perfect square on the left side:
(t + -2.1875)(t + -2.1875) = 5.09765625

Calculate the square root of the right side: 2.257798984

Break this problem into two subproblems by setting 
(t + -2.1875) equal to 2.257798984 and -2.257798984.

Subproblem 1

t + -2.1875 = 2.257798984 Simplifying t + -2.1875 = 2.257798984 Reorder the terms: -2.1875 + t = 2.257798984 Solving -2.1875 + t = 2.257798984 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.1875' to each side of the equation. -2.1875 + 2.1875 + t = 2.257798984 + 2.1875 Combine like terms: -2.1875 + 2.1875 = 0.0000 0.0000 + t = 2.257798984 + 2.1875 t = 2.257798984 + 2.1875 Combine like terms: 2.257798984 + 2.1875 = 4.445298984 t = 4.445298984 Simplifying t = 4.445298984

Subproblem 2

t + -2.1875 = -2.257798984 Simplifying t + -2.1875 = -2.257798984 Reorder the terms: -2.1875 + t = -2.257798984 Solving -2.1875 + t = -2.257798984 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.1875' to each side of the equation. -2.1875 + 2.1875 + t = -2.257798984 + 2.1875 Combine like terms: -2.1875 + 2.1875 = 0.0000 0.0000 + t = -2.257798984 + 2.1875 t = -2.257798984 + 2.1875 Combine like terms: -2.257798984 + 2.1875 = -0.070298984 t = -0.070298984 Simplifying t = -0.070298984

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.445298984, -0.070298984}

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