t^2+15t+11=0

Simple and best practice solution for t^2+15t+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 t^2+15t+11=0 equation:


Simplifying
t2 + 15t + 11 = 0

Reorder the terms:
11 + 15t + t2 = 0

Solving
11 + 15t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '-11' to each side of the equation.
11 + 15t + -11 + t2 = 0 + -11

Reorder the terms:
11 + -11 + 15t + t2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + 15t + t2 = 0 + -11
15t + t2 = 0 + -11

Combine like terms: 0 + -11 = -11
15t + t2 = -11

The t term is 15t.  Take half its coefficient (7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
15t + 56.25 + t2 = -11 + 56.25

Reorder the terms:
56.25 + 15t + t2 = -11 + 56.25

Combine like terms: -11 + 56.25 = 45.25
56.25 + 15t + t2 = 45.25

Factor a perfect square on the left side:
(t + 7.5)(t + 7.5) = 45.25

Calculate the square root of the right side: 6.726812024

Break this problem into two subproblems by setting 
(t + 7.5) equal to 6.726812024 and -6.726812024.

Subproblem 1

t + 7.5 = 6.726812024 Simplifying t + 7.5 = 6.726812024 Reorder the terms: 7.5 + t = 6.726812024 Solving 7.5 + t = 6.726812024 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + t = 6.726812024 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + t = 6.726812024 + -7.5 t = 6.726812024 + -7.5 Combine like terms: 6.726812024 + -7.5 = -0.773187976 t = -0.773187976 Simplifying t = -0.773187976

Subproblem 2

t + 7.5 = -6.726812024 Simplifying t + 7.5 = -6.726812024 Reorder the terms: 7.5 + t = -6.726812024 Solving 7.5 + t = -6.726812024 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + t = -6.726812024 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + t = -6.726812024 + -7.5 t = -6.726812024 + -7.5 Combine like terms: -6.726812024 + -7.5 = -14.226812024 t = -14.226812024 Simplifying t = -14.226812024

Solution

The solution to the problem is based on the solutions from the subproblems. t = {-0.773187976, -14.226812024}

See similar equations:

| 15x^2+4x+4=O | | F(0)=2x-3 | | 2x^2+28x+98=0 | | B^2+11b+28=0 | | 3(a+5)+6=27 | | F(-4)=2x-3 | | 4r^2+31r+42=0 | | 7h^2+7h^2=9h-3 | | v^2-11v+30=0 | | s^2+13s+42=0 | | 24q+18y=30 | | (13r+7)(6r-18)=0 | | 9b+4=12 | | (b+4)(b-9)=0 | | 4+3x=25 | | 3+3x=36 | | 12q+6y=15 | | 7p-4q=9 | | 3y^2+2y=5-4y | | y=x^2+2x-2 | | P+14=2 | | -5+2=33 | | x^2+18x=2 | | .5x+2=2.5x-10 | | -.75y=12 | | 5x+4y=18 | | .75y=12 | | 7.5x=20 | | 6p-2p=9p | | 7.5x=14 | | 15y+30x=10 | | y=2x^2-84x+1025 |

Equations solver categories