3x+5-2=6x+x^2-18

Simple and best practice solution for 3x+5-2=6x+x^2-18 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 3x+5-2=6x+x^2-18 equation:


Simplifying
3x + 5 + -2 = 6x + x2 + -18

Reorder the terms:
5 + -2 + 3x = 6x + x2 + -18

Combine like terms: 5 + -2 = 3
3 + 3x = 6x + x2 + -18

Reorder the terms:
3 + 3x = -18 + 6x + x2

Solving
3 + 3x = -18 + 6x + x2

Solving for variable 'x'.

Reorder the terms:
3 + 18 + 3x + -6x + -1x2 = -18 + 6x + x2 + 18 + -6x + -1x2

Combine like terms: 3 + 18 = 21
21 + 3x + -6x + -1x2 = -18 + 6x + x2 + 18 + -6x + -1x2

Combine like terms: 3x + -6x = -3x
21 + -3x + -1x2 = -18 + 6x + x2 + 18 + -6x + -1x2

Reorder the terms:
21 + -3x + -1x2 = -18 + 18 + 6x + -6x + x2 + -1x2

Combine like terms: -18 + 18 = 0
21 + -3x + -1x2 = 0 + 6x + -6x + x2 + -1x2
21 + -3x + -1x2 = 6x + -6x + x2 + -1x2

Combine like terms: 6x + -6x = 0
21 + -3x + -1x2 = 0 + x2 + -1x2
21 + -3x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
21 + -3x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-21 + 3x + x2 = 0

Move the constant term to the right:

Add '21' to each side of the equation.
-21 + 3x + 21 + x2 = 0 + 21

Reorder the terms:
-21 + 21 + 3x + x2 = 0 + 21

Combine like terms: -21 + 21 = 0
0 + 3x + x2 = 0 + 21
3x + x2 = 0 + 21

Combine like terms: 0 + 21 = 21
3x + x2 = 21

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 21 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 21 + 2.25

Combine like terms: 21 + 2.25 = 23.25
2.25 + 3x + x2 = 23.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 23.25

Calculate the square root of the right side: 4.82182538

Break this problem into two subproblems by setting 
(x + 1.5) equal to 4.82182538 and -4.82182538.

Subproblem 1

x + 1.5 = 4.82182538 Simplifying x + 1.5 = 4.82182538 Reorder the terms: 1.5 + x = 4.82182538 Solving 1.5 + x = 4.82182538 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 4.82182538 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 4.82182538 + -1.5 x = 4.82182538 + -1.5 Combine like terms: 4.82182538 + -1.5 = 3.32182538 x = 3.32182538 Simplifying x = 3.32182538

Subproblem 2

x + 1.5 = -4.82182538 Simplifying x + 1.5 = -4.82182538 Reorder the terms: 1.5 + x = -4.82182538 Solving 1.5 + x = -4.82182538 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -4.82182538 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -4.82182538 + -1.5 x = -4.82182538 + -1.5 Combine like terms: -4.82182538 + -1.5 = -6.32182538 x = -6.32182538 Simplifying x = -6.32182538

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.32182538, -6.32182538}

See similar equations:

| 2x-2x=32-4 | | 5s-(4s+8)= | | tank=60000 | | y^2+3y=x^4-3x^2 | | 7/8x-9/8=9 | | 24x+18y=0 | | -5(5s+5)= | | 4.1xn=24.6 | | -32+(-18)= | | -4y/3=8 | | X^7+6X^6-9X^3=y | | 5n+19=6(1+3n) | | x^2+36=26 | | 15x+24=30x | | 6+2w=4+6w | | 8x-9+3(6x+-2)=4-(7x-2)+6x | | 8x-3x+11x-6x= | | 3x=(x+20)+80 | | 11=2x^2+3x | | 6x^3+18=x+108 | | 5x+10-4x=17 | | Y^7-81y^3=0 | | -2(2x+9)=-4x+18 | | 5[2(1.5+x)]=44 | | -4x-8(x+5)=-4x+9 | | 5x-1/4y=2 | | 2p-50=22 | | -5/4-5/4 | | 2(1.5+x)=44 | | bitch=720 | | 3t-3=6t-8 | | -(4x-10)+4(5x+7)= |

Equations solver categories