t^2-12t-18=0

Simple and best practice solution for t^2-12t-18=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^2-12t-18=0 equation:


Simplifying
t2 + -12t + -18 = 0

Reorder the terms:
-18 + -12t + t2 = 0

Solving
-18 + -12t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '18' to each side of the equation.
-18 + -12t + 18 + t2 = 0 + 18

Reorder the terms:
-18 + 18 + -12t + t2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -12t + t2 = 0 + 18
-12t + t2 = 0 + 18

Combine like terms: 0 + 18 = 18
-12t + t2 = 18

The t term is -12t.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12t + 36 + t2 = 18 + 36

Reorder the terms:
36 + -12t + t2 = 18 + 36

Combine like terms: 18 + 36 = 54
36 + -12t + t2 = 54

Factor a perfect square on the left side:
(t + -6)(t + -6) = 54

Calculate the square root of the right side: 7.348469228

Break this problem into two subproblems by setting 
(t + -6) equal to 7.348469228 and -7.348469228.

Subproblem 1

t + -6 = 7.348469228 Simplifying t + -6 = 7.348469228 Reorder the terms: -6 + t = 7.348469228 Solving -6 + t = 7.348469228 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + t = 7.348469228 + 6 Combine like terms: -6 + 6 = 0 0 + t = 7.348469228 + 6 t = 7.348469228 + 6 Combine like terms: 7.348469228 + 6 = 13.348469228 t = 13.348469228 Simplifying t = 13.348469228

Subproblem 2

t + -6 = -7.348469228 Simplifying t + -6 = -7.348469228 Reorder the terms: -6 + t = -7.348469228 Solving -6 + t = -7.348469228 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + t = -7.348469228 + 6 Combine like terms: -6 + 6 = 0 0 + t = -7.348469228 + 6 t = -7.348469228 + 6 Combine like terms: -7.348469228 + 6 = -1.348469228 t = -1.348469228 Simplifying t = -1.348469228

Solution

The solution to the problem is based on the solutions from the subproblems. t = {13.348469228, -1.348469228}

See similar equations:

| (10)2x-3=(10)3(4x-3) | | (x^3+1)(x-1)=0 | | 3.7x=20.72 | | -3(2x-8)+5=-6x+29 | | 12-2x=-4x+4 | | 8x-5/6=7/3 | | 6/18/8 | | (3x-8y)(x+3y)=0 | | x/9-6=78 | | log(x^2-4x)=1 | | 2(m-1)+3(3-2m)=-5(m+5)+9 | | 60(t-0.75)=-35t | | 0.46(0.75)+x(0.25)=0.5 | | X+1+2x-1=15 | | (3r-1)(4r+3)=0 | | 4(z+2)-(4+8z)=-5z | | x^2-y^2=.96x^2 | | 3(4x+1)=3x+12 | | ((3/14)/(7/12)) | | x^2-y^2=.36x^2 | | -220=-x | | 4x+20=-2x+56 | | 4(z+2)-(4+8z)=5z | | 5/7x-2/7=-3 | | 6x-30=-2x-86 | | 4(z+2)+(4+8z)=5z | | 3y=5(y)+11 | | 6-5(x+1)=16 | | 8z+5-5z=4+2z-5 | | -5(z-9)=-4z-1 | | (5w-8)(3+w)=0 | | y=6(-3+-1y) |

Equations solver categories