x(2x+3)=6

Simple and best practice solution for x(2x+3)=6 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 x(2x+3)=6 equation:


Simplifying
x(2x + 3) = 6

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

Solving
3x + 2x2 = 6

Solving for variable 'x'.

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

Combine like terms: 6 + -6 = 0
-6 + 3x + 2x2 = 0

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

Divide each side by '2'.
-3 + 1.5x + x2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + 1.5x + 3 + x2 = 0 + 3

Reorder the terms:
-3 + 3 + 1.5x + x2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + 1.5x + x2 = 0 + 3
1.5x + x2 = 0 + 3

Combine like terms: 0 + 3 = 3
1.5x + x2 = 3

The x term is 1.5x.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5x + 0.5625 + x2 = 3 + 0.5625

Reorder the terms:
0.5625 + 1.5x + x2 = 3 + 0.5625

Combine like terms: 3 + 0.5625 = 3.5625
0.5625 + 1.5x + x2 = 3.5625

Factor a perfect square on the left side:
(x + 0.75)(x + 0.75) = 3.5625

Calculate the square root of the right side: 1.887458609

Break this problem into two subproblems by setting 
(x + 0.75) equal to 1.887458609 and -1.887458609.

Subproblem 1

x + 0.75 = 1.887458609 Simplifying x + 0.75 = 1.887458609 Reorder the terms: 0.75 + x = 1.887458609 Solving 0.75 + x = 1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = 1.887458609 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = 1.887458609 + -0.75 x = 1.887458609 + -0.75 Combine like terms: 1.887458609 + -0.75 = 1.137458609 x = 1.137458609 Simplifying x = 1.137458609

Subproblem 2

x + 0.75 = -1.887458609 Simplifying x + 0.75 = -1.887458609 Reorder the terms: 0.75 + x = -1.887458609 Solving 0.75 + x = -1.887458609 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + x = -1.887458609 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + x = -1.887458609 + -0.75 x = -1.887458609 + -0.75 Combine like terms: -1.887458609 + -0.75 = -2.637458609 x = -2.637458609 Simplifying x = -2.637458609

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.137458609, -2.637458609}

See similar equations:

| x^2-11x+30.25= | | 8x+5x-3x=15-7+22 | | -a+4a+11=2 | | ln(x^4)-8ln(x)=4 | | 3x-9=3(2-x) | | 7y-(2y-3)=8 | | 3x-9=3(s-x) | | x*0.65=0.58*x+5 | | 80x+30=230 | | 0.65*x=0.58(x+5) | | 0.65x=0.58(x+5) | | ln(x+1)=100 | | -3(6x)-8+4x=46 | | 3x-16x+22x= | | 4x+5=8x-13 | | lnx^6-lnx^9=1 | | 4(m+3)-7=45 | | lnx^6-9lnx=1 | | 5(2x-1)=3(x-4)-5 | | a*5+18=2a+108 | | 2ln(x)=ln(11x) | | 65-2a=16a+21 | | 7-8a=73-22a | | x+6=8x-10 | | x^3*y-x^2*y^3=6 | | 8x-10=x+6 | | 2x-15=x+17 | | 14+5=14x-19 | | 10*x^3+36*x^2+45*x+18=0 | | -3-8=7x+10 | | U=2x+y | | 4h+1=hv-2 |

Equations solver categories