x^2+2x=97

Simple and best practice solution for x^2+2x=97 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+2x=97 equation:


Simplifying
x2 + 2x = 97

Reorder the terms:
2x + x2 = 97

Solving
2x + x2 = 97

Solving for variable 'x'.

Reorder the terms:
-97 + 2x + x2 = 97 + -97

Combine like terms: 97 + -97 = 0
-97 + 2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '97' to each side of the equation.
-97 + 2x + 97 + x2 = 0 + 97

Reorder the terms:
-97 + 97 + 2x + x2 = 0 + 97

Combine like terms: -97 + 97 = 0
0 + 2x + x2 = 0 + 97
2x + x2 = 0 + 97

Combine like terms: 0 + 97 = 97
2x + x2 = 97

The x term is 2x.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2x + 1 + x2 = 97 + 1

Reorder the terms:
1 + 2x + x2 = 97 + 1

Combine like terms: 97 + 1 = 98
1 + 2x + x2 = 98

Factor a perfect square on the left side:
(x + 1)(x + 1) = 98

Calculate the square root of the right side: 9.899494937

Break this problem into two subproblems by setting 
(x + 1) equal to 9.899494937 and -9.899494937.

Subproblem 1

x + 1 = 9.899494937 Simplifying x + 1 = 9.899494937 Reorder the terms: 1 + x = 9.899494937 Solving 1 + x = 9.899494937 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = 9.899494937 + -1 Combine like terms: 1 + -1 = 0 0 + x = 9.899494937 + -1 x = 9.899494937 + -1 Combine like terms: 9.899494937 + -1 = 8.899494937 x = 8.899494937 Simplifying x = 8.899494937

Subproblem 2

x + 1 = -9.899494937 Simplifying x + 1 = -9.899494937 Reorder the terms: 1 + x = -9.899494937 Solving 1 + x = -9.899494937 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + x = -9.899494937 + -1 Combine like terms: 1 + -1 = 0 0 + x = -9.899494937 + -1 x = -9.899494937 + -1 Combine like terms: -9.899494937 + -1 = -10.899494937 x = -10.899494937 Simplifying x = -10.899494937

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.899494937, -10.899494937}

See similar equations:

| 3(2x+5)-4(x-3)=0 | | 16x+48=-16 | | 30+35+2x+5=180 | | (9x)=10 | | 4x^2+11x+4=0 | | 2t^2-87-90=0 | | 3.4x-2.16=1.36-5.4x | | -7x+2x-1=14 | | 12x=11x-27 | | 3.4x-2.16=1.3-5.4x | | 9a^2-3a-30=0 | | X^2+2x-53=8 | | bx=0 | | d-10=-25 | | x^2-4x=11 | | 5x+4=4x-1 | | 4x+13x=68 | | 5y-7=6y+2 | | 8x^2-30x+25=0 | | 264=.55x | | 10n=9n+31 | | 3x+21=-2+11 | | -x^2+7x-19=0 | | 8a+a-3ba= | | 198=.33x | | 3(x-8)+2(4x-1)=3 | | 14j^2+15j-9=0 | | 144=52a-4a^2 | | 21=.12x | | 7a-2a= | | 3x^2=-16x-16 | | n^3-81n=0 |

Equations solver categories