2t^2+19t-9=0

Simple and best practice solution for 2t^2+19t-9=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+19t-9=0 equation:


Simplifying
2t2 + 19t + -9 = 0

Reorder the terms:
-9 + 19t + 2t2 = 0

Solving
-9 + 19t + 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'.
-4.5 + 9.5t + t2 = 0

Move the constant term to the right:

Add '4.5' to each side of the equation.
-4.5 + 9.5t + 4.5 + t2 = 0 + 4.5

Reorder the terms:
-4.5 + 4.5 + 9.5t + t2 = 0 + 4.5

Combine like terms: -4.5 + 4.5 = 0.0
0.0 + 9.5t + t2 = 0 + 4.5
9.5t + t2 = 0 + 4.5

Combine like terms: 0 + 4.5 = 4.5
9.5t + t2 = 4.5

The t term is 9.5t.  Take half its coefficient (4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
9.5t + 22.5625 + t2 = 4.5 + 22.5625

Reorder the terms:
22.5625 + 9.5t + t2 = 4.5 + 22.5625

Combine like terms: 4.5 + 22.5625 = 27.0625
22.5625 + 9.5t + t2 = 27.0625

Factor a perfect square on the left side:
(t + 4.75)(t + 4.75) = 27.0625

Calculate the square root of the right side: 5.202163012

Break this problem into two subproblems by setting 
(t + 4.75) equal to 5.202163012 and -5.202163012.

Subproblem 1

t + 4.75 = 5.202163012 Simplifying t + 4.75 = 5.202163012 Reorder the terms: 4.75 + t = 5.202163012 Solving 4.75 + t = 5.202163012 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + t = 5.202163012 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + t = 5.202163012 + -4.75 t = 5.202163012 + -4.75 Combine like terms: 5.202163012 + -4.75 = 0.452163012 t = 0.452163012 Simplifying t = 0.452163012

Subproblem 2

t + 4.75 = -5.202163012 Simplifying t + 4.75 = -5.202163012 Reorder the terms: 4.75 + t = -5.202163012 Solving 4.75 + t = -5.202163012 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-4.75' to each side of the equation. 4.75 + -4.75 + t = -5.202163012 + -4.75 Combine like terms: 4.75 + -4.75 = 0.00 0.00 + t = -5.202163012 + -4.75 t = -5.202163012 + -4.75 Combine like terms: -5.202163012 + -4.75 = -9.952163012 t = -9.952163012 Simplifying t = -9.952163012

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.452163012, -9.952163012}

See similar equations:

| 3(4x+4)=-96 | | 2x^3+60x^2=20z | | 12x-79-(4x-15)=0 | | 5(10x-57)=5(5x-7) | | 10x-14=-22+2x | | 3x-11=3(x+8) | | [X+15]-6=-14 | | 1/2(6y+10)=-4 | | 6(3x-2)=2(2x-6) | | x^8-5x^7+16x^6-14x^5+25x^4-83x^3+242x^2-292x+200=0 | | -4.8-4.8=0 | | -10x-5=-10(x-12) | | 4a+6b-3c=13 | | 7x-16x=55+26 | | x+4-7=3x-2 | | 3x-50+8(x-2)=0 | | 15x-12x=60+3 | | 4(2n-3)=12 | | 6x-5x+11x=73-13 | | (-4x-17)+(5x+3)= | | 32-x=5x | | -11w-18=26 | | 9n-6=11 | | x+2x=376 | | 13x+5=-2x+50 | | y^2+10y+25*y^2-3y= | | (x-10)(x-1)=(x+9)(x+1) | | 7x-30+6=3x | | -w/7+5=1 | | -60+15x=12x+3 | | 4(5x-6)=20x-24 | | y+1=-3 |

Equations solver categories