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

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


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

Reorder the terms:
2x(4 + x) = (x + -3)(x + -3)
(4 * 2x + x * 2x) = (x + -3)(x + -3)
(8x + 2x2) = (x + -3)(x + -3)

Reorder the terms:
8x + 2x2 = (-3 + x)(x + -3)

Reorder the terms:
8x + 2x2 = (-3 + x)(-3 + x)

Multiply (-3 + x) * (-3 + x)
8x + 2x2 = (-3(-3 + x) + x(-3 + x))
8x + 2x2 = ((-3 * -3 + x * -3) + x(-3 + x))
8x + 2x2 = ((9 + -3x) + x(-3 + x))
8x + 2x2 = (9 + -3x + (-3 * x + x * x))
8x + 2x2 = (9 + -3x + (-3x + x2))

Combine like terms: -3x + -3x = -6x
8x + 2x2 = (9 + -6x + x2)

Solving
8x + 2x2 = 9 + -6x + x2

Solving for variable 'x'.

Reorder the terms:
-9 + 8x + 6x + 2x2 + -1x2 = 9 + -6x + x2 + -9 + 6x + -1x2

Combine like terms: 8x + 6x = 14x
-9 + 14x + 2x2 + -1x2 = 9 + -6x + x2 + -9 + 6x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
-9 + 14x + 1x2 = 9 + -6x + x2 + -9 + 6x + -1x2

Reorder the terms:
-9 + 14x + 1x2 = 9 + -9 + -6x + 6x + x2 + -1x2

Combine like terms: 9 + -9 = 0
-9 + 14x + 1x2 = 0 + -6x + 6x + x2 + -1x2
-9 + 14x + 1x2 = -6x + 6x + x2 + -1x2

Combine like terms: -6x + 6x = 0
-9 + 14x + 1x2 = 0 + x2 + -1x2
-9 + 14x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-9 + 14x + 1x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + 14x + 9 + x2 = 0 + 9

Reorder the terms:
-9 + 9 + 14x + x2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 14x + x2 = 0 + 9
14x + x2 = 0 + 9

Combine like terms: 0 + 9 = 9
14x + x2 = 9

The x term is 14x.  Take half its coefficient (7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
14x + 49 + x2 = 9 + 49

Reorder the terms:
49 + 14x + x2 = 9 + 49

Combine like terms: 9 + 49 = 58
49 + 14x + x2 = 58

Factor a perfect square on the left side:
(x + 7)(x + 7) = 58

Calculate the square root of the right side: 7.615773106

Break this problem into two subproblems by setting 
(x + 7) equal to 7.615773106 and -7.615773106.

Subproblem 1

x + 7 = 7.615773106 Simplifying x + 7 = 7.615773106 Reorder the terms: 7 + x = 7.615773106 Solving 7 + x = 7.615773106 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 7.615773106 + -7 Combine like terms: 7 + -7 = 0 0 + x = 7.615773106 + -7 x = 7.615773106 + -7 Combine like terms: 7.615773106 + -7 = 0.615773106 x = 0.615773106 Simplifying x = 0.615773106

Subproblem 2

x + 7 = -7.615773106 Simplifying x + 7 = -7.615773106 Reorder the terms: 7 + x = -7.615773106 Solving 7 + x = -7.615773106 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = -7.615773106 + -7 Combine like terms: 7 + -7 = 0 0 + x = -7.615773106 + -7 x = -7.615773106 + -7 Combine like terms: -7.615773106 + -7 = -14.615773106 x = -14.615773106 Simplifying x = -14.615773106

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.615773106, -14.615773106}

See similar equations:

| 6k-17=2(4k-3)+7 | | 12-4x=-8x+8 | | -3x+16=-38 | | x^2+2+4x=0 | | 12x+5=6+10x | | 8.5-3z=5x-3 | | 30-5x=3x | | x^2-8-7x=0 | | 5y^2+30y*40=0 | | 2y-1=-17-2y | | 4y+3=2y+14whatisy | | Sec^2(x)=2Tan^2(x) | | 24x^3-16x^2+68= | | 2+5k=3k+-6 | | 10x+3y+2x-4y= | | ln(2x+1)=5 | | g^2+11g+10=0 | | 9/z=3 | | 2+6x=-8+x | | 24*24= | | 2cos^2-2cosx+cosx=1 | | 5q^2+18q-8=8q-8 | | 24*22= | | 9h-11=-3+8h | | 28-2h=18 | | 4e^2x-3=18 | | 6x(24/2)2 | | -20x+5y=-10 | | 7(4-x)(x+8)=0 | | 5(w+6)=-4(3w-3)+5w | | 3x^2+3y^2+12x-6y=24 | | 5(w+6)=-4(3w-3) |

Equations solver categories