35=x(x+4)

Simple and best practice solution for 35=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 35=x(x+4) equation:


Simplifying
35 = x(x + 4)

Reorder the terms:
35 = x(4 + x)
35 = (4 * x + x * x)
35 = (4x + x2)

Solving
35 = 4x + x2

Solving for variable 'x'.

Reorder the terms:
35 + -4x + -1x2 = 4x + -4x + x2 + -1x2

Combine like terms: 4x + -4x = 0
35 + -4x + -1x2 = 0 + x2 + -1x2
35 + -4x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
35 + -4x + -1x2 = 0

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

Divide each side by '-1'.
-35 + 4x + x2 = 0

Move the constant term to the right:

Add '35' to each side of the equation.
-35 + 4x + 35 + x2 = 0 + 35

Reorder the terms:
-35 + 35 + 4x + x2 = 0 + 35

Combine like terms: -35 + 35 = 0
0 + 4x + x2 = 0 + 35
4x + x2 = 0 + 35

Combine like terms: 0 + 35 = 35
4x + x2 = 35

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 = 35 + 4

Reorder the terms:
4 + 4x + x2 = 35 + 4

Combine like terms: 35 + 4 = 39
4 + 4x + x2 = 39

Factor a perfect square on the left side:
(x + 2)(x + 2) = 39

Calculate the square root of the right side: 6.244997998

Break this problem into two subproblems by setting 
(x + 2) equal to 6.244997998 and -6.244997998.

Subproblem 1

x + 2 = 6.244997998 Simplifying x + 2 = 6.244997998 Reorder the terms: 2 + x = 6.244997998 Solving 2 + x = 6.244997998 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 = 6.244997998 + -2 Combine like terms: 2 + -2 = 0 0 + x = 6.244997998 + -2 x = 6.244997998 + -2 Combine like terms: 6.244997998 + -2 = 4.244997998 x = 4.244997998 Simplifying x = 4.244997998

Subproblem 2

x + 2 = -6.244997998 Simplifying x + 2 = -6.244997998 Reorder the terms: 2 + x = -6.244997998 Solving 2 + x = -6.244997998 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 = -6.244997998 + -2 Combine like terms: 2 + -2 = 0 0 + x = -6.244997998 + -2 x = -6.244997998 + -2 Combine like terms: -6.244997998 + -2 = -8.244997998 x = -8.244997998 Simplifying x = -8.244997998

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.244997998, -8.244997998}

See similar equations:

| 7+(-2)=w | | -9+5=w | | 12x-12=12x-12 | | -2(1-4x)=10(x+2) | | x(t)=500-2t | | 7x+10-4x=5+2x-8 | | 2(0.5)+1= | | x(t)=400-2t | | -32u=-3 | | 4n-45=equation | | y^2=16-7y | | -15=2t-4 | | 8x+6y=117 | | 12x=-12x+12 | | 2(x+5)=7x | | Y^2=9-8y | | 9x-(3x+8)=7x-47 | | 3(5x-1)=4x-14 | | 225+x^2=25+x^2 | | logx(7.44)=1.1 | | 18=-5v-v | | 1.2+y+4.25=7 | | 5x^2+5x-130=0 | | 6n+116= | | 0=x^4-4x^2+3 | | 720=x+70 | | 12x+2=12x-12 | | 720=x*70 | | 200+x^2=x^2 | | 3x+10=-7y | | 4y-1=17+4y | | x-(5x+9)=0 |

Equations solver categories