2t^2+9t+1=0

Simple and best practice solution for 2t^2+9t+1=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+9t+1=0 equation:


Simplifying
2t2 + 9t + 1 = 0

Reorder the terms:
1 + 9t + 2t2 = 0

Solving
1 + 9t + 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'.
0.5 + 4.5t + t2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + 4.5t + -0.5 + t2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + 4.5t + t2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + 4.5t + t2 = 0 + -0.5
4.5t + t2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
4.5t + t2 = -0.5

The t term is 4.5t.  Take half its coefficient (2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
4.5t + 5.0625 + t2 = -0.5 + 5.0625

Reorder the terms:
5.0625 + 4.5t + t2 = -0.5 + 5.0625

Combine like terms: -0.5 + 5.0625 = 4.5625
5.0625 + 4.5t + t2 = 4.5625

Factor a perfect square on the left side:
(t + 2.25)(t + 2.25) = 4.5625

Calculate the square root of the right side: 2.136000936

Break this problem into two subproblems by setting 
(t + 2.25) equal to 2.136000936 and -2.136000936.

Subproblem 1

t + 2.25 = 2.136000936 Simplifying t + 2.25 = 2.136000936 Reorder the terms: 2.25 + t = 2.136000936 Solving 2.25 + t = 2.136000936 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + t = 2.136000936 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + t = 2.136000936 + -2.25 t = 2.136000936 + -2.25 Combine like terms: 2.136000936 + -2.25 = -0.113999064 t = -0.113999064 Simplifying t = -0.113999064

Subproblem 2

t + 2.25 = -2.136000936 Simplifying t + 2.25 = -2.136000936 Reorder the terms: 2.25 + t = -2.136000936 Solving 2.25 + t = -2.136000936 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-2.25' to each side of the equation. 2.25 + -2.25 + t = -2.136000936 + -2.25 Combine like terms: 2.25 + -2.25 = 0.00 0.00 + t = -2.136000936 + -2.25 t = -2.136000936 + -2.25 Combine like terms: -2.136000936 + -2.25 = -4.386000936 t = -4.386000936 Simplifying t = -4.386000936

Solution

The solution to the problem is based on the solutions from the subproblems. t = {-0.113999064, -4.386000936}

See similar equations:

| 5/6=6/10p | | 5(x+2)+3x=4(2x-5) | | 4(p-6)=-4 | | 3x^2+20x=2 | | 3/5x?=1/5 | | ax-by=a(c-b) | | 3(x+2)-2(3x+4)+3=x-(x+1)-3 | | 8(94)= | | 5(a+2)=-5 | | f(x)=2x^2-x^4 | | 2x+3x+5x+105=12findx | | (x-3)(x+4)=0.33 | | 8(x-1)=1x-3 | | 7(-7-n)=-63 | | Sin(3x)cos(x)=cos(3x)sin(x) | | Sin(x)+sqrt(2)=-sin(x) | | Cos(x)+cos(5x)=cos(3x)+cos(7x) | | 3x^3+5x^2-6x+8=0 | | 2(x-5)=2x-7 | | 143=5(4-6x)+3 | | 3x+y=34 | | 0.4b+92=10 | | x^2+90=100 | | 4(5x-4)=4x+28 | | x^2+90=115 | | f(3)=-15x^2+15-x | | -8(1-2p)=-36+2p | | 7x+2=6-3 | | y+8=.5(x-3) | | -3(1-3b)=-38+2b | | 5-6(n-2)=16-5n | | 5(x+3)=2(6-2x) |

Equations solver categories