2t^2+5t-11=0

Simple and best practice solution for 2t^2+5t-11=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+5t-11=0 equation:


Simplifying
2t2 + 5t + -11 = 0

Reorder the terms:
-11 + 5t + 2t2 = 0

Solving
-11 + 5t + 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'.
-5.5 + 2.5t + t2 = 0

Move the constant term to the right:

Add '5.5' to each side of the equation.
-5.5 + 2.5t + 5.5 + t2 = 0 + 5.5

Reorder the terms:
-5.5 + 5.5 + 2.5t + t2 = 0 + 5.5

Combine like terms: -5.5 + 5.5 = 0.0
0.0 + 2.5t + t2 = 0 + 5.5
2.5t + t2 = 0 + 5.5

Combine like terms: 0 + 5.5 = 5.5
2.5t + t2 = 5.5

The t term is 2.5t.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5t + 1.5625 + t2 = 5.5 + 1.5625

Reorder the terms:
1.5625 + 2.5t + t2 = 5.5 + 1.5625

Combine like terms: 5.5 + 1.5625 = 7.0625
1.5625 + 2.5t + t2 = 7.0625

Factor a perfect square on the left side:
(t + 1.25)(t + 1.25) = 7.0625

Calculate the square root of the right side: 2.657536453

Break this problem into two subproblems by setting 
(t + 1.25) equal to 2.657536453 and -2.657536453.

Subproblem 1

t + 1.25 = 2.657536453 Simplifying t + 1.25 = 2.657536453 Reorder the terms: 1.25 + t = 2.657536453 Solving 1.25 + t = 2.657536453 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + t = 2.657536453 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + t = 2.657536453 + -1.25 t = 2.657536453 + -1.25 Combine like terms: 2.657536453 + -1.25 = 1.407536453 t = 1.407536453 Simplifying t = 1.407536453

Subproblem 2

t + 1.25 = -2.657536453 Simplifying t + 1.25 = -2.657536453 Reorder the terms: 1.25 + t = -2.657536453 Solving 1.25 + t = -2.657536453 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-1.25' to each side of the equation. 1.25 + -1.25 + t = -2.657536453 + -1.25 Combine like terms: 1.25 + -1.25 = 0.00 0.00 + t = -2.657536453 + -1.25 t = -2.657536453 + -1.25 Combine like terms: -2.657536453 + -1.25 = -3.907536453 t = -3.907536453 Simplifying t = -3.907536453

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.407536453, -3.907536453}

See similar equations:

| 20=100-x | | -16=.02b | | 2n-12/12 | | 3x-3(4x-18)=153 | | 6-5a=2 | | .7083= | | -4x-6(x-7)=26-8x | | Y=-1.64+0.09(50) | | 7x+44=73 | | -41+10x=x+76 | | -3v+8+4v=31 | | 3(m-8)=-3 | | 3x^2+1=-10 | | Y=-4.445+0.15(63) | | 7280-80x=0 | | 7x-6(6x-10)=-114 | | z/8-3=3 | | 2f(b)=x^2-2x+1 | | 1=3y+x+0.25 | | 0.05x+24.7=x | | 0.000000000243m= | | .4x-.07=2.73 | | 24x+43=24x+15 | | 9(6h+8)=33 | | -1=3y+x+0.25 | | f(x)=2x^3+3x^2-120x+30 | | 8/8-2/3 | | 1-5x=-6x-6 | | 5/-x-1/3x | | 5x^2+15x+5.25=0 | | -2(-4p-7)= | | (2x+4)(2x-5)=(4x-3)(x+2) |

Equations solver categories