92=x(x+4)

Simple and best practice solution for 92=x(x+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 92=x(x+4) equation:


Simplifying
92 = x(x + 4)

Reorder the terms:
92 = x(4 + x)
92 = (4 * x + x * x)
92 = (4x + x2)

Solving
92 = 4x + x2

Solving for variable 'x'.

Reorder the terms:
92 + -4x + -1x2 = 4x + -4x + x2 + -1x2

Combine like terms: 4x + -4x = 0
92 + -4x + -1x2 = 0 + x2 + -1x2
92 + -4x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
92 + -4x + -1x2 = 0

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

Divide each side by '-1'.
-92 + 4x + x2 = 0

Move the constant term to the right:

Add '92' to each side of the equation.
-92 + 4x + 92 + x2 = 0 + 92

Reorder the terms:
-92 + 92 + 4x + x2 = 0 + 92

Combine like terms: -92 + 92 = 0
0 + 4x + x2 = 0 + 92
4x + x2 = 0 + 92

Combine like terms: 0 + 92 = 92
4x + x2 = 92

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 92 + 4

Reorder the terms:
4 + 4x + x2 = 92 + 4

Combine like terms: 92 + 4 = 96
4 + 4x + x2 = 96

Factor a perfect square on the left side:
(x + 2)(x + 2) = 96

Calculate the square root of the right side: 9.797958971

Break this problem into two subproblems by setting 
(x + 2) equal to 9.797958971 and -9.797958971.

Subproblem 1

x + 2 = 9.797958971 Simplifying x + 2 = 9.797958971 Reorder the terms: 2 + x = 9.797958971 Solving 2 + x = 9.797958971 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 9.797958971 + -2 Combine like terms: 2 + -2 = 0 0 + x = 9.797958971 + -2 x = 9.797958971 + -2 Combine like terms: 9.797958971 + -2 = 7.797958971 x = 7.797958971 Simplifying x = 7.797958971

Subproblem 2

x + 2 = -9.797958971 Simplifying x + 2 = -9.797958971 Reorder the terms: 2 + x = -9.797958971 Solving 2 + x = -9.797958971 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -9.797958971 + -2 Combine like terms: 2 + -2 = 0 0 + x = -9.797958971 + -2 x = -9.797958971 + -2 Combine like terms: -9.797958971 + -2 = -11.797958971 x = -11.797958971 Simplifying x = -11.797958971

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.797958971, -11.797958971}

See similar equations:

| a^4b^6/ab^3 | | 5/8x-51/8x=3/2 | | 9x+6(100)= | | 3q-r=7 | | 483575.32=19105.8019x^(5/2)-60446.915x | | 2=9y/4 | | 18=(4/3x)(-3/2x) | | 5/4=z/8 | | 8+6(x-3)=2-7(x-6) | | 4x*2x^2=0 | | 5/4=2/8 | | 20x-(2x-4)=40 | | (4x+7)+(2x-1)=180 | | K-7=-9 | | 3(1-2x)=2(5x-1) | | 5x+20=4x+20 | | 14+6=-4(4x-5) | | 4x-12-3x+9=2x+8 | | 2x(x-6)(3x+2)=0 | | 5a^2+3a-2=0 | | -2.3-3x-4.1-x=-3x-0.9 | | ln(3x-6)=8 | | K+12=10 | | K+10=10 | | 3x-2x+8=5x+5+3 | | -2+n=6n+22 | | -3=-15-3x | | 5a-3=a+45 | | M+22=50 | | K+18=36 | | W+39=39 | | K+21=42 |

Equations solver categories