2x(x-3)=3x+4

Simple and best practice solution for 2x(x-3)=3x+4 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 2x(x-3)=3x+4 equation:


Simplifying
2x(x + -3) = 3x + 4

Reorder the terms:
2x(-3 + x) = 3x + 4
(-3 * 2x + x * 2x) = 3x + 4
(-6x + 2x2) = 3x + 4

Reorder the terms:
-6x + 2x2 = 4 + 3x

Solving
-6x + 2x2 = 4 + 3x

Solving for variable 'x'.

Reorder the terms:
-4 + -6x + -3x + 2x2 = 4 + 3x + -4 + -3x

Combine like terms: -6x + -3x = -9x
-4 + -9x + 2x2 = 4 + 3x + -4 + -3x

Reorder the terms:
-4 + -9x + 2x2 = 4 + -4 + 3x + -3x

Combine like terms: 4 + -4 = 0
-4 + -9x + 2x2 = 0 + 3x + -3x
-4 + -9x + 2x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-4 + -9x + 2x2 = 0

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

Divide each side by '2'.
-2 + -4.5x + x2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + -4.5x + 2 + x2 = 0 + 2

Reorder the terms:
-2 + 2 + -4.5x + x2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -4.5x + x2 = 0 + 2
-4.5x + x2 = 0 + 2

Combine like terms: 0 + 2 = 2
-4.5x + x2 = 2

The x term is -4.5x.  Take half its coefficient (-2.25).
Square it (5.0625) and add it to both sides.

Add '5.0625' to each side of the equation.
-4.5x + 5.0625 + x2 = 2 + 5.0625

Reorder the terms:
5.0625 + -4.5x + x2 = 2 + 5.0625

Combine like terms: 2 + 5.0625 = 7.0625
5.0625 + -4.5x + x2 = 7.0625

Factor a perfect square on the left side:
(x + -2.25)(x + -2.25) = 7.0625

Calculate the square root of the right side: 2.657536453

Break this problem into two subproblems by setting 
(x + -2.25) equal to 2.657536453 and -2.657536453.

Subproblem 1

x + -2.25 = 2.657536453 Simplifying x + -2.25 = 2.657536453 Reorder the terms: -2.25 + x = 2.657536453 Solving -2.25 + x = 2.657536453 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = 2.657536453 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = 2.657536453 + 2.25 x = 2.657536453 + 2.25 Combine like terms: 2.657536453 + 2.25 = 4.907536453 x = 4.907536453 Simplifying x = 4.907536453

Subproblem 2

x + -2.25 = -2.657536453 Simplifying x + -2.25 = -2.657536453 Reorder the terms: -2.25 + x = -2.657536453 Solving -2.25 + x = -2.657536453 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2.25' to each side of the equation. -2.25 + 2.25 + x = -2.657536453 + 2.25 Combine like terms: -2.25 + 2.25 = 0.00 0.00 + x = -2.657536453 + 2.25 x = -2.657536453 + 2.25 Combine like terms: -2.657536453 + 2.25 = -0.407536453 x = -0.407536453 Simplifying x = -0.407536453

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.907536453, -0.407536453}

See similar equations:

| 4x+9=7+4 | | 12x-61=180 | | 4+9=7+4 | | 9x^3+6x^2-6x-4=0 | | 2=-3/w-5 | | R-3=3-r | | 7p-33=4(8+6p)+3 | | 10x-26=98 | | 13x+40=75 | | X/1/6=2 | | 3(y-4)-6y=-3 | | X^3+x^2+4x+30=0 | | 2x+4x=3x+15 | | X-25=64 | | 3(x-2)=12+x | | 19+2x=23 | | 13=d/7 | | 6x+72=8x+96 | | X-2.85=4.74 | | -(-2b+6)=-20+4b | | 12x+6y=132 | | (x-2)=12+x | | 8x-9=2x+44 | | -12x+13x=10x+18 | | y=-0.33lnx | | 0.88+x=7.24 | | X-18=.865 | | -4(4x-5)+8x=84 | | w/3-9=7 | | -3.4q+1.9=-1.7-1.6q | | tan50/7 | | 7x-7=2x+7 |

Equations solver categories