t^2+20t-100=0

Simple and best practice solution for t^2+20t-100=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+20t-100=0 equation:


Simplifying
t2 + 20t + -100 = 0

Reorder the terms:
-100 + 20t + t2 = 0

Solving
-100 + 20t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '100' to each side of the equation.
-100 + 20t + 100 + t2 = 0 + 100

Reorder the terms:
-100 + 100 + 20t + t2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + 20t + t2 = 0 + 100
20t + t2 = 0 + 100

Combine like terms: 0 + 100 = 100
20t + t2 = 100

The t term is 20t.  Take half its coefficient (10).
Square it (100) and add it to both sides.

Add '100' to each side of the equation.
20t + 100 + t2 = 100 + 100

Reorder the terms:
100 + 20t + t2 = 100 + 100

Combine like terms: 100 + 100 = 200
100 + 20t + t2 = 200

Factor a perfect square on the left side:
(t + 10)(t + 10) = 200

Calculate the square root of the right side: 14.142135624

Break this problem into two subproblems by setting 
(t + 10) equal to 14.142135624 and -14.142135624.

Subproblem 1

t + 10 = 14.142135624 Simplifying t + 10 = 14.142135624 Reorder the terms: 10 + t = 14.142135624 Solving 10 + t = 14.142135624 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + t = 14.142135624 + -10 Combine like terms: 10 + -10 = 0 0 + t = 14.142135624 + -10 t = 14.142135624 + -10 Combine like terms: 14.142135624 + -10 = 4.142135624 t = 4.142135624 Simplifying t = 4.142135624

Subproblem 2

t + 10 = -14.142135624 Simplifying t + 10 = -14.142135624 Reorder the terms: 10 + t = -14.142135624 Solving 10 + t = -14.142135624 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + t = -14.142135624 + -10 Combine like terms: 10 + -10 = 0 0 + t = -14.142135624 + -10 t = -14.142135624 + -10 Combine like terms: -14.142135624 + -10 = -24.142135624 t = -24.142135624 Simplifying t = -24.142135624

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.142135624, -24.142135624}

See similar equations:

| 2x+5x-3x-3x+2=13 | | 4a+2-8+1= | | -b^3+5b^3+24b=0 | | ax^2=9 | | 12*4/7 | | .05x+.13y=800 | | 7s+-6s+14s+-16s+-2s-2=-20 | | -3y+-4y= | | 14v+v-11v+3v-7=7 | | 6x+2/3=-5/24 | | 3y-y=10 | | 1/7x-1/8x=3 | | 7u-5u-u-1=17 | | 2a+12=15 | | 12X^2-180x+464=0 | | h=-5t^2+30 | | t+w=12 | | 12w-12w+4w-3w-1=6 | | -5-6+(-1)-(-7)= | | -2z-16z-12z-9z-8z=20 | | 4h+2h-5h+3=13 | | x^3+x=2 | | Y=-3+6x | | -8-(-2)-(-1)= | | 25-3x=19 | | 10n+-3n-19=-16 | | 2x^3+6x^2+6x-7=0 | | -5x+2=62 | | -d-14d-12d=-10 | | 2x+62=5 | | 4g+6g+8g+-9g-8=20 | | 19-5/2*x=34 |

Equations solver categories