-16t^2+2.2t+3.5=0

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Solution for -16t^2+2.2t+3.5=0 equation:


Simplifying
-16t2 + 2.2t + 3.5 = 0

Reorder the terms:
3.5 + 2.2t + -16t2 = 0

Solving
3.5 + 2.2t + -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'.
-0.21875 + -0.1375t + t2 = 0

Move the constant term to the right:

Add '0.21875' to each side of the equation.
-0.21875 + -0.1375t + 0.21875 + t2 = 0 + 0.21875

Reorder the terms:
-0.21875 + 0.21875 + -0.1375t + t2 = 0 + 0.21875

Combine like terms: -0.21875 + 0.21875 = 0.00000
0.00000 + -0.1375t + t2 = 0 + 0.21875
-0.1375t + t2 = 0 + 0.21875

Combine like terms: 0 + 0.21875 = 0.21875
-0.1375t + t2 = 0.21875

The t term is -0.1375t.  Take half its coefficient (-0.06875).
Square it (0.0047265625) and add it to both sides.

Add '0.0047265625' to each side of the equation.
-0.1375t + 0.0047265625 + t2 = 0.21875 + 0.0047265625

Reorder the terms:
0.0047265625 + -0.1375t + t2 = 0.21875 + 0.0047265625

Combine like terms: 0.21875 + 0.0047265625 = 0.2234765625
0.0047265625 + -0.1375t + t2 = 0.2234765625

Factor a perfect square on the left side:
(t + -0.06875)(t + -0.06875) = 0.2234765625

Calculate the square root of the right side: 0.472733077

Break this problem into two subproblems by setting 
(t + -0.06875) equal to 0.472733077 and -0.472733077.

Subproblem 1

t + -0.06875 = 0.472733077 Simplifying t + -0.06875 = 0.472733077 Reorder the terms: -0.06875 + t = 0.472733077 Solving -0.06875 + t = 0.472733077 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.06875' to each side of the equation. -0.06875 + 0.06875 + t = 0.472733077 + 0.06875 Combine like terms: -0.06875 + 0.06875 = 0.00000 0.00000 + t = 0.472733077 + 0.06875 t = 0.472733077 + 0.06875 Combine like terms: 0.472733077 + 0.06875 = 0.541483077 t = 0.541483077 Simplifying t = 0.541483077

Subproblem 2

t + -0.06875 = -0.472733077 Simplifying t + -0.06875 = -0.472733077 Reorder the terms: -0.06875 + t = -0.472733077 Solving -0.06875 + t = -0.472733077 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.06875' to each side of the equation. -0.06875 + 0.06875 + t = -0.472733077 + 0.06875 Combine like terms: -0.06875 + 0.06875 = 0.00000 0.00000 + t = -0.472733077 + 0.06875 t = -0.472733077 + 0.06875 Combine like terms: -0.472733077 + 0.06875 = -0.403983077 t = -0.403983077 Simplifying t = -0.403983077

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.541483077, -0.403983077}

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