x^2+20x-101=-3

Simple and best practice solution for x^2+20x-101=-3 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 x^2+20x-101=-3 equation:


Simplifying
x2 + 20x + -101 = -3

Reorder the terms:
-101 + 20x + x2 = -3

Solving
-101 + 20x + x2 = -3

Solving for variable 'x'.

Reorder the terms:
-101 + 3 + 20x + x2 = -3 + 3

Combine like terms: -101 + 3 = -98
-98 + 20x + x2 = -3 + 3

Combine like terms: -3 + 3 = 0
-98 + 20x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '98' to each side of the equation.
-98 + 20x + 98 + x2 = 0 + 98

Reorder the terms:
-98 + 98 + 20x + x2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + 20x + x2 = 0 + 98
20x + x2 = 0 + 98

Combine like terms: 0 + 98 = 98
20x + x2 = 98

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

Add '100' to each side of the equation.
20x + 100 + x2 = 98 + 100

Reorder the terms:
100 + 20x + x2 = 98 + 100

Combine like terms: 98 + 100 = 198
100 + 20x + x2 = 198

Factor a perfect square on the left side:
(x + 10)(x + 10) = 198

Calculate the square root of the right side: 14.071247279

Break this problem into two subproblems by setting 
(x + 10) equal to 14.071247279 and -14.071247279.

Subproblem 1

x + 10 = 14.071247279 Simplifying x + 10 = 14.071247279 Reorder the terms: 10 + x = 14.071247279 Solving 10 + x = 14.071247279 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = 14.071247279 + -10 Combine like terms: 10 + -10 = 0 0 + x = 14.071247279 + -10 x = 14.071247279 + -10 Combine like terms: 14.071247279 + -10 = 4.071247279 x = 4.071247279 Simplifying x = 4.071247279

Subproblem 2

x + 10 = -14.071247279 Simplifying x + 10 = -14.071247279 Reorder the terms: 10 + x = -14.071247279 Solving 10 + x = -14.071247279 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + x = -14.071247279 + -10 Combine like terms: 10 + -10 = 0 0 + x = -14.071247279 + -10 x = -14.071247279 + -10 Combine like terms: -14.071247279 + -10 = -24.071247279 x = -24.071247279 Simplifying x = -24.071247279

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.071247279, -24.071247279}

See similar equations:

| 3+m=d+y | | 6(b-7)=-84 | | -4m-1=7 | | 7(z+2)=5z+2 | | 25-7w=47 | | =3-1-1 | | 20p-12=588 | | 6m-20=3m-2 | | 6-3y-12y-1=0 | | m+y=2-n | | p^2+16p+24=9 | | 5(8-5x)=-160 | | 2(3x-1)+6x=-2x-(7x+3) | | -0.3=-0.7u+0.6u | | -6(7a+7)=210 | | 2x+y+z=-2 | | 21x=-1 | | 11=-6v-5v | | 3*x-11=x+25 | | 60b^2+68b-168=0 | | -7n-6n=-13 | | 47533.32=2*3.14*r*r+2*3.14*r*232 | | -2m+3m=-4m-10 | | 8.25-0.25x=9.75-0.75x | | 9=-8n-n | | 3*x-11=c+25 | | 5t-19=-43+2t | | 2p-2=-23+9p | | 8-2(a-2)=2(a+3)-6 | | 150=180(n-2) | | 0=3p-8p | | 2085000000+550000x=2500000 |

Equations solver categories