5.2x^2+x-1=0

Simple and best practice solution for 5.2x^2+x-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 5.2x^2+x-1=0 equation:


Simplifying
5.2x2 + x + -1 = 0

Reorder the terms:
-1 + x + 5.2x2 = 0

Solving
-1 + x + 5.2x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
5.2 the coefficient of the squared term: 

Divide each side by '5.2'.
-0.1923076923 + 0.1923076923x + x2 = 0

Move the constant term to the right:

Add '0.1923076923' to each side of the equation.
-0.1923076923 + 0.1923076923x + 0.1923076923 + x2 = 0 + 0.1923076923

Reorder the terms:
-0.1923076923 + 0.1923076923 + 0.1923076923x + x2 = 0 + 0.1923076923

Combine like terms: -0.1923076923 + 0.1923076923 = 0.0000000000
0.0000000000 + 0.1923076923x + x2 = 0 + 0.1923076923
0.1923076923x + x2 = 0 + 0.1923076923

Combine like terms: 0 + 0.1923076923 = 0.1923076923
0.1923076923x + x2 = 0.1923076923

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.1923076923x + 0.25 + x2 = 0.1923076923 + 0.25

Reorder the terms:
0.25 + 0.1923076923x + x2 = 0.1923076923 + 0.25

Combine like terms: 0.1923076923 + 0.25 = 0.4423076923
0.25 + 0.1923076923x + x2 = 0.4423076923

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 0.4423076923

Calculate the square root of the right side: 0.665062172

Break this problem into two subproblems by setting 
(x + 0.5) equal to 0.665062172 and -0.665062172.

Subproblem 1

x + 0.5 = 0.665062172 Simplifying x + 0.5 = 0.665062172 Reorder the terms: 0.5 + x = 0.665062172 Solving 0.5 + x = 0.665062172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 0.665062172 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.665062172 + -0.5 x = 0.665062172 + -0.5 Combine like terms: 0.665062172 + -0.5 = 0.165062172 x = 0.165062172 Simplifying x = 0.165062172

Subproblem 2

x + 0.5 = -0.665062172 Simplifying x + 0.5 = -0.665062172 Reorder the terms: 0.5 + x = -0.665062172 Solving 0.5 + x = -0.665062172 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -0.665062172 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.665062172 + -0.5 x = -0.665062172 + -0.5 Combine like terms: -0.665062172 + -0.5 = -1.165062172 x = -1.165062172 Simplifying x = -1.165062172

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.165062172, -1.165062172}

See similar equations:

| 18u+(-14u)-(-27)=-1 | | 16x-4x-12=24+2 | | z^3+15z^2+15z+1=0 | | 9j=34j | | 8x+9y=10000 | | 12w+8w-12w+5w-6=46 | | 12w-2w-9w=18 | | 25a-8a+a+8a-22a+2=50 | | x-2/5=2/3-3x-2/6 | | 9x+4=12x-9 | | 14k-6k-6k-k=38 | | 4x+22=-32 | | 2p-p+11=22 | | x^2-16000+1600000=0 | | 3(1)+1-2y=0 | | 3x-6=2x+27 | | 3(1+1)-2y=0 | | 2y+2y+y-4y=16 | | 7h-h+h-4h-h-2=12 | | 2*2+3(y-1)=22 | | 15x+2x-14x-2x=14 | | (x-5)*(x-5)= | | 8y+y-8y+1=18 | | 1.25/2=x | | -2j-(-12j)+1=-19 | | 1.25*2=x | | 4n-4n+2n+2=12 | | 3(m-5)+m=0 | | 4s+3s+4s-9s=12 | | 14q-3q+(-7q)=-16 | | x-10=99 | | -8s+3s-(-8s)-7s-(-7s)-(-14s)=-10 |

Equations solver categories