18t^2-2t-65=0

Simple and best practice solution for 18t^2-2t-65=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 18t^2-2t-65=0 equation:


Simplifying
18t2 + -2t + -65 = 0

Reorder the terms:
-65 + -2t + 18t2 = 0

Solving
-65 + -2t + 18t2 = 0

Solving for variable 't'.

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

Divide each side by '18'.
-3.611111111 + -0.1111111111t + t2 = 0

Move the constant term to the right:

Add '3.611111111' to each side of the equation.
-3.611111111 + -0.1111111111t + 3.611111111 + t2 = 0 + 3.611111111

Reorder the terms:
-3.611111111 + 3.611111111 + -0.1111111111t + t2 = 0 + 3.611111111

Combine like terms: -3.611111111 + 3.611111111 = 0.000000000
0.000000000 + -0.1111111111t + t2 = 0 + 3.611111111
-0.1111111111t + t2 = 0 + 3.611111111

Combine like terms: 0 + 3.611111111 = 3.611111111
-0.1111111111t + t2 = 3.611111111

The t term is -0.1111111111t.  Take half its coefficient (-0.05555555555).
Square it (0.003086419752) and add it to both sides.

Add '0.003086419752' to each side of the equation.
-0.1111111111t + 0.003086419752 + t2 = 3.611111111 + 0.003086419752

Reorder the terms:
0.003086419752 + -0.1111111111t + t2 = 3.611111111 + 0.003086419752

Combine like terms: 3.611111111 + 0.003086419752 = 3.614197530752
0.003086419752 + -0.1111111111t + t2 = 3.614197530752

Factor a perfect square on the left side:
(t + -0.05555555555)(t + -0.05555555555) = 3.614197530752

Calculate the square root of the right side: 1.901104292

Break this problem into two subproblems by setting 
(t + -0.05555555555) equal to 1.901104292 and -1.901104292.

Subproblem 1

t + -0.05555555555 = 1.901104292 Simplifying t + -0.05555555555 = 1.901104292 Reorder the terms: -0.05555555555 + t = 1.901104292 Solving -0.05555555555 + t = 1.901104292 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.05555555555' to each side of the equation. -0.05555555555 + 0.05555555555 + t = 1.901104292 + 0.05555555555 Combine like terms: -0.05555555555 + 0.05555555555 = 0.00000000000 0.00000000000 + t = 1.901104292 + 0.05555555555 t = 1.901104292 + 0.05555555555 Combine like terms: 1.901104292 + 0.05555555555 = 1.95665984755 t = 1.95665984755 Simplifying t = 1.95665984755

Subproblem 2

t + -0.05555555555 = -1.901104292 Simplifying t + -0.05555555555 = -1.901104292 Reorder the terms: -0.05555555555 + t = -1.901104292 Solving -0.05555555555 + t = -1.901104292 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.05555555555' to each side of the equation. -0.05555555555 + 0.05555555555 + t = -1.901104292 + 0.05555555555 Combine like terms: -0.05555555555 + 0.05555555555 = 0.00000000000 0.00000000000 + t = -1.901104292 + 0.05555555555 t = -1.901104292 + 0.05555555555 Combine like terms: -1.901104292 + 0.05555555555 = -1.84554873645 t = -1.84554873645 Simplifying t = -1.84554873645

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.95665984755, -1.84554873645}

See similar equations:

| 8n-27=-n+18 | | 6x+2=-x-3+2x | | 3(x-5)=2(4-x) | | 4x-20+5y=0 | | 6X-290=X | | 5x+3x+4=AC | | 90=16n | | 8(1+3a)=-18-2a | | Y+8=19 | | x-132=-(5x)+42 | | 12x^3+4x^2=0 | | 0=9x+5y-20 | | cos^2(5x)+sin^2(5x)=1 | | 6+5u=-14 | | 5x-2325=3950 | | (-67)-6x=17-12x | | 5x^4+8x^3-4x^2-x-3=0 | | (60-2x)=(2x-60) | | -3n+4=5n+8 | | 3ln(x+1)=5 | | m+1.6=-2.2 | | 3x^2-3y^2-y+4=0 | | 4y-8-3x=0 | | 6(4x-3)=-10x | | 5x^3+4x^2-6x=0 | | -30=q-10+11w | | y=2x^2+13x | | x^3-15x+2=0 | | -20X=-380 | | 2-5y=19 | | 7y^2-13y+6= | | 2x+15=-5y |

Equations solver categories