5x^2-3x-6=x

Simple and best practice solution for 5x^2-3x-6=x 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 5x^2-3x-6=x equation:


Simplifying
5x2 + -3x + -6 = x

Reorder the terms:
-6 + -3x + 5x2 = x

Solving
-6 + -3x + 5x2 = x

Solving for variable 'x'.

Reorder the terms:
-6 + -3x + -1x + 5x2 = x + -1x

Combine like terms: -3x + -1x = -4x
-6 + -4x + 5x2 = x + -1x

Combine like terms: x + -1x = 0
-6 + -4x + 5x2 = 0

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

Divide each side by '5'.
-1.2 + -0.8x + x2 = 0

Move the constant term to the right:

Add '1.2' to each side of the equation.
-1.2 + -0.8x + 1.2 + x2 = 0 + 1.2

Reorder the terms:
-1.2 + 1.2 + -0.8x + x2 = 0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + -0.8x + x2 = 0 + 1.2
-0.8x + x2 = 0 + 1.2

Combine like terms: 0 + 1.2 = 1.2
-0.8x + x2 = 1.2

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = 1.2 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = 1.2 + 0.16

Combine like terms: 1.2 + 0.16 = 1.36
0.16 + -0.8x + x2 = 1.36

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = 1.36

Calculate the square root of the right side: 1.166190379

Break this problem into two subproblems by setting 
(x + -0.4) equal to 1.166190379 and -1.166190379.

Subproblem 1

x + -0.4 = 1.166190379 Simplifying x + -0.4 = 1.166190379 Reorder the terms: -0.4 + x = 1.166190379 Solving -0.4 + x = 1.166190379 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 1.166190379 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 1.166190379 + 0.4 x = 1.166190379 + 0.4 Combine like terms: 1.166190379 + 0.4 = 1.566190379 x = 1.566190379 Simplifying x = 1.566190379

Subproblem 2

x + -0.4 = -1.166190379 Simplifying x + -0.4 = -1.166190379 Reorder the terms: -0.4 + x = -1.166190379 Solving -0.4 + x = -1.166190379 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = -1.166190379 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = -1.166190379 + 0.4 x = -1.166190379 + 0.4 Combine like terms: -1.166190379 + 0.4 = -0.766190379 x = -0.766190379 Simplifying x = -0.766190379

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.566190379, -0.766190379}

See similar equations:

| 4x=-4+7x+6 | | 7n+8=-20 | | a/3-7=-1 | | 3(5-x)-2(x-1)=-7(x+3) | | (n+3)*5=60 | | 3p-5=4 | | (K-12)x^2+2(k-12)x+2=0 | | x^2+4-4x-4xy+11=0 | | x^2+4-4xy+11=0 | | 3(5-x)-2(x-1)=7(x+3) | | 3x-2(-1)=8 | | X+(X*0.05)=108 | | 10/2=25/x | | 5/x=x/20 | | 2(x+5)-4x=9 | | x^2+6x+1=9x+5 | | x^2-2x-23=1 | | 0.5x+0.3x=x-12 | | 4x^2-33x+37=-6x+2 | | 5x+8-7=3x-4+11 | | 6(t-t)-76=-142 | | x^2+16y-4=0 | | 6t-3=7t-8 | | a+(4b-22)+(2c+7)=180 | | x^10-60x=452x | | x^2-52.977x+500=0 | | x^2-53x+500=0 | | x^2-53x-500=0 | | x^2-53x+55=0 | | x^2-52.977x+55=0 | | x^6-8x=235x | | y=x^2+1.75 |

Equations solver categories