(x-5)(x+1)=4

Simple and best practice solution for (x-5)(x+1)=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 (x-5)(x+1)=4 equation:


Simplifying
(x + -5)(x + 1) = 4

Reorder the terms:
(-5 + x)(x + 1) = 4

Reorder the terms:
(-5 + x)(1 + x) = 4

Multiply (-5 + x) * (1 + x)
(-5(1 + x) + x(1 + x)) = 4
((1 * -5 + x * -5) + x(1 + x)) = 4
((-5 + -5x) + x(1 + x)) = 4
(-5 + -5x + (1 * x + x * x)) = 4
(-5 + -5x + (1x + x2)) = 4

Combine like terms: -5x + 1x = -4x
(-5 + -4x + x2) = 4

Solving
-5 + -4x + x2 = 4

Solving for variable 'x'.

Reorder the terms:
-5 + -4 + -4x + x2 = 4 + -4

Combine like terms: -5 + -4 = -9
-9 + -4x + x2 = 4 + -4

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

Begin completing the square.

Move the constant term to the right:

Add '9' to each side of the equation.
-9 + -4x + 9 + x2 = 0 + 9

Reorder the terms:
-9 + 9 + -4x + x2 = 0 + 9

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

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

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 = 9 + 4

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

Combine like terms: 9 + 4 = 13
4 + -4x + x2 = 13

Factor a perfect square on the left side:
(x + -2)(x + -2) = 13

Calculate the square root of the right side: 3.605551275

Break this problem into two subproblems by setting 
(x + -2) equal to 3.605551275 and -3.605551275.

Subproblem 1

x + -2 = 3.605551275 Simplifying x + -2 = 3.605551275 Reorder the terms: -2 + x = 3.605551275 Solving -2 + x = 3.605551275 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 = 3.605551275 + 2 Combine like terms: -2 + 2 = 0 0 + x = 3.605551275 + 2 x = 3.605551275 + 2 Combine like terms: 3.605551275 + 2 = 5.605551275 x = 5.605551275 Simplifying x = 5.605551275

Subproblem 2

x + -2 = -3.605551275 Simplifying x + -2 = -3.605551275 Reorder the terms: -2 + x = -3.605551275 Solving -2 + x = -3.605551275 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 = -3.605551275 + 2 Combine like terms: -2 + 2 = 0 0 + x = -3.605551275 + 2 x = -3.605551275 + 2 Combine like terms: -3.605551275 + 2 = -1.605551275 x = -1.605551275 Simplifying x = -1.605551275

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.605551275, -1.605551275}

See similar equations:

| 2+5*x=4x | | 3r^2-2r-5=0 | | -6y-5=7+9y | | 3r^2-24-5=0 | | 10r+8=58 | | 72m^7n+24n= | | 49m^5n^3+28mn^4= | | a^2+13a-68=0 | | 10m^3n^2-25m^2n^3= | | 2s+9s+20=128 | | 7p+9=8p+4 | | 3(x-2)=-2x-16 | | m^3n+9m^2n= | | 4(2x+3u)-3(x-y)= | | 9x^3+30x= | | 45x^2-20x= | | 2*N=12 | | 2XN=12 | | 29-(2c+3)=2(c+3)+c | | p^2+2pq+q^2-2p-2q-15=0 | | 3(m+4)=39 | | 12+36x+27x^2=0 | | x-2x-25=0 | | t^4-7t^2-18=0 | | X=8+9Y-5*2 | | x=x+6 | | 60[100s]= | | 10x^2+21x-27=0 | | 28+x=24 | | 12d-6+4d= | | N+17=22 | | (y-2)-(Y+6)=4Y |

Equations solver categories