3x^2=5+6x

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


Simplifying
3x2 = 5 + 6x

Solving
3x2 = 5 + 6x

Solving for variable 'x'.

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

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

Combine like terms: 5 + -5 = 0
-5 + -6x + 3x2 = 0 + 6x + -6x
-5 + -6x + 3x2 = 6x + -6x

Combine like terms: 6x + -6x = 0
-5 + -6x + 3x2 = 0

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

Divide each side by '3'.
-1.666666667 + -2x + x2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + -2x + 1.666666667 + x2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + -2x + x2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + -2x + x2 = 0 + 1.666666667
-2x + x2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
-2x + x2 = 1.666666667

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 = 1.666666667 + 1

Reorder the terms:
1 + -2x + x2 = 1.666666667 + 1

Combine like terms: 1.666666667 + 1 = 2.666666667
1 + -2x + x2 = 2.666666667

Factor a perfect square on the left side:
(x + -1)(x + -1) = 2.666666667

Calculate the square root of the right side: 1.632993162

Break this problem into two subproblems by setting 
(x + -1) equal to 1.632993162 and -1.632993162.

Subproblem 1

x + -1 = 1.632993162 Simplifying x + -1 = 1.632993162 Reorder the terms: -1 + x = 1.632993162 Solving -1 + x = 1.632993162 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 = 1.632993162 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.632993162 + 1 x = 1.632993162 + 1 Combine like terms: 1.632993162 + 1 = 2.632993162 x = 2.632993162 Simplifying x = 2.632993162

Subproblem 2

x + -1 = -1.632993162 Simplifying x + -1 = -1.632993162 Reorder the terms: -1 + x = -1.632993162 Solving -1 + x = -1.632993162 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 = -1.632993162 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.632993162 + 1 x = -1.632993162 + 1 Combine like terms: -1.632993162 + 1 = -0.632993162 x = -0.632993162 Simplifying x = -0.632993162

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.632993162, -0.632993162}

See similar equations:

| 3w+w+w+3w=30in | | 6(z-2)+3=32-15 | | 4x+8-2(-4x-1)=2(x-3) | | -x-(2/5)=x+(1/6)+(4/5) | | 2x+5=15+4x | | 5x+2y-4=2 | | 4x^2=-4x-3 | | F(-3)=x^2-5x-4 | | c/9-22=4 | | 2b+4-6+b=-5 | | 8y-5=2y-29 | | -6(2b+2)+(13b-3)=0 | | 3w+w+w+3wp=30im | | -3x-7/2=23/2 | | 7x-18=6x-18 | | 20-(12-2x)=38 | | 2x-1/3=x+1/4 | | 0=-3x-4-2y | | fx=-x^2-2x-6 | | 11=9x-6/4+8x+8/3 | | 7(k-2)-(6k+2)=-5 | | 2x-4x-12=-2x+5-12 | | 3.4q-1.6-5.9q=-3.5q-3.3 | | 35x-12= | | 2x-x=14 | | -y-3+4x=0 | | -1/3y-5/2=7y-5/3 | | -5y+3=-6x+12 | | s+141=336 | | 200.00+.05x=75.00+.10x | | 0.08(y-9)+0.18y=0.12y-0.05(20) | | -2x-3(5x+8)=61 |

Equations solver categories