-16t^2+18t+7=10

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Solution for -16t^2+18t+7=10 equation:


Simplifying
-16t2 + 18t + 7 = 10

Reorder the terms:
7 + 18t + -16t2 = 10

Solving
7 + 18t + -16t2 = 10

Solving for variable 't'.

Reorder the terms:
7 + -10 + 18t + -16t2 = 10 + -10

Combine like terms: 7 + -10 = -3
-3 + 18t + -16t2 = 10 + -10

Combine like terms: 10 + -10 = 0
-3 + 18t + -16t2 = 0

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

Divide each side by '-16'.
0.1875 + -1.125t + t2 = 0

Move the constant term to the right:

Add '-0.1875' to each side of the equation.
0.1875 + -1.125t + -0.1875 + t2 = 0 + -0.1875

Reorder the terms:
0.1875 + -0.1875 + -1.125t + t2 = 0 + -0.1875

Combine like terms: 0.1875 + -0.1875 = 0.0000
0.0000 + -1.125t + t2 = 0 + -0.1875
-1.125t + t2 = 0 + -0.1875

Combine like terms: 0 + -0.1875 = -0.1875
-1.125t + t2 = -0.1875

The t term is -1.125t.  Take half its coefficient (-0.5625).
Square it (0.31640625) and add it to both sides.

Add '0.31640625' to each side of the equation.
-1.125t + 0.31640625 + t2 = -0.1875 + 0.31640625

Reorder the terms:
0.31640625 + -1.125t + t2 = -0.1875 + 0.31640625

Combine like terms: -0.1875 + 0.31640625 = 0.12890625
0.31640625 + -1.125t + t2 = 0.12890625

Factor a perfect square on the left side:
(t + -0.5625)(t + -0.5625) = 0.12890625

Calculate the square root of the right side: 0.359035165

Break this problem into two subproblems by setting 
(t + -0.5625) equal to 0.359035165 and -0.359035165.

Subproblem 1

t + -0.5625 = 0.359035165 Simplifying t + -0.5625 = 0.359035165 Reorder the terms: -0.5625 + t = 0.359035165 Solving -0.5625 + t = 0.359035165 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5625' to each side of the equation. -0.5625 + 0.5625 + t = 0.359035165 + 0.5625 Combine like terms: -0.5625 + 0.5625 = 0.0000 0.0000 + t = 0.359035165 + 0.5625 t = 0.359035165 + 0.5625 Combine like terms: 0.359035165 + 0.5625 = 0.921535165 t = 0.921535165 Simplifying t = 0.921535165

Subproblem 2

t + -0.5625 = -0.359035165 Simplifying t + -0.5625 = -0.359035165 Reorder the terms: -0.5625 + t = -0.359035165 Solving -0.5625 + t = -0.359035165 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5625' to each side of the equation. -0.5625 + 0.5625 + t = -0.359035165 + 0.5625 Combine like terms: -0.5625 + 0.5625 = 0.0000 0.0000 + t = -0.359035165 + 0.5625 t = -0.359035165 + 0.5625 Combine like terms: -0.359035165 + 0.5625 = 0.203464835 t = 0.203464835 Simplifying t = 0.203464835

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.921535165, 0.203464835}

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