2t^2-2t-13=0

Simple and best practice solution for 2t^2-2t-13=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 2t^2-2t-13=0 equation:


Simplifying
2t2 + -2t + -13 = 0

Reorder the terms:
-13 + -2t + 2t2 = 0

Solving
-13 + -2t + 2t2 = 0

Solving for variable 't'.

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

Divide each side by '2'.
-6.5 + -1t + t2 = 0

Move the constant term to the right:

Add '6.5' to each side of the equation.
-6.5 + -1t + 6.5 + t2 = 0 + 6.5

Reorder the terms:
-6.5 + 6.5 + -1t + t2 = 0 + 6.5

Combine like terms: -6.5 + 6.5 = 0.0
0.0 + -1t + t2 = 0 + 6.5
-1t + t2 = 0 + 6.5

Combine like terms: 0 + 6.5 = 6.5
-1t + t2 = 6.5

The t term is -1t.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1t + 0.25 + t2 = 6.5 + 0.25

Reorder the terms:
0.25 + -1t + t2 = 6.5 + 0.25

Combine like terms: 6.5 + 0.25 = 6.75
0.25 + -1t + t2 = 6.75

Factor a perfect square on the left side:
(t + -0.5)(t + -0.5) = 6.75

Calculate the square root of the right side: 2.598076211

Break this problem into two subproblems by setting 
(t + -0.5) equal to 2.598076211 and -2.598076211.

Subproblem 1

t + -0.5 = 2.598076211 Simplifying t + -0.5 = 2.598076211 Reorder the terms: -0.5 + t = 2.598076211 Solving -0.5 + t = 2.598076211 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + t = 2.598076211 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + t = 2.598076211 + 0.5 t = 2.598076211 + 0.5 Combine like terms: 2.598076211 + 0.5 = 3.098076211 t = 3.098076211 Simplifying t = 3.098076211

Subproblem 2

t + -0.5 = -2.598076211 Simplifying t + -0.5 = -2.598076211 Reorder the terms: -0.5 + t = -2.598076211 Solving -0.5 + t = -2.598076211 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + t = -2.598076211 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + t = -2.598076211 + 0.5 t = -2.598076211 + 0.5 Combine like terms: -2.598076211 + 0.5 = -2.098076211 t = -2.098076211 Simplifying t = -2.098076211

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.098076211, -2.098076211}

See similar equations:

| 175*4y=5y | | f(x)=x+14 | | p^2+56=15p | | 7(1+6x)-1=8x+40 | | 8m+12-12m-9+m=6 | | k^2-2k-5=0 | | 5m^2+26m+24=0 | | Y=0.4 | | 3(3p+4)=32+4p | | g(x)=0.5x-6 | | 2x+4+4x-14=180 | | 40=-8b | | -4-6k=-4-(6k+6) | | 1/8*1/5= | | -9+y=-9 | | 10x+10=-12x+15+5x | | 2w+21=p | | 2b+7=2(b-3) | | -5=y-14 | | 4x^2+40x-84=0 | | 33+5a=3-8(-3a+1) | | 0=-2x^2+x-1 | | 2w+22=p | | -4(7x+11)=2(10-19x)+2 | | 8(x-3)=-28+7x | | 2(6-5x)=-18 | | 8+6v=2(6+5v) | | 12x^2-11x+7=0 | | 3(1x-7)=9 | | 48=-11+18+2t | | 2(5c+2)=3(4c-2) | | -4(7x+11)=2(10-19x+2) |

Equations solver categories