-(x-7)(x+5)-1=0

Simple and best practice solution for -(x-7)(x+5)-1=0 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-7)(x+5)-1=0 equation:


Simplifying
-1(x + -7)(x + 5) + -1 = 0

Reorder the terms:
-1(-7 + x)(x + 5) + -1 = 0

Reorder the terms:
-1(-7 + x)(5 + x) + -1 = 0

Multiply (-7 + x) * (5 + x)
-1(-7(5 + x) + x(5 + x)) + -1 = 0
-1((5 * -7 + x * -7) + x(5 + x)) + -1 = 0
-1((-35 + -7x) + x(5 + x)) + -1 = 0
-1(-35 + -7x + (5 * x + x * x)) + -1 = 0
-1(-35 + -7x + (5x + x2)) + -1 = 0

Combine like terms: -7x + 5x = -2x
-1(-35 + -2x + x2) + -1 = 0
(-35 * -1 + -2x * -1 + x2 * -1) + -1 = 0
(35 + 2x + -1x2) + -1 = 0

Reorder the terms:
35 + -1 + 2x + -1x2 = 0

Combine like terms: 35 + -1 = 34
34 + 2x + -1x2 = 0

Solving
34 + 2x + -1x2 = 0

Solving for variable 'x'.

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

Divide each side by '-1'.
-34 + -2x + x2 = 0

Move the constant term to the right:

Add '34' to each side of the equation.
-34 + -2x + 34 + x2 = 0 + 34

Reorder the terms:
-34 + 34 + -2x + x2 = 0 + 34

Combine like terms: -34 + 34 = 0
0 + -2x + x2 = 0 + 34
-2x + x2 = 0 + 34

Combine like terms: 0 + 34 = 34
-2x + x2 = 34

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = 34 + 1

Reorder the terms:
1 + -2x + x2 = 34 + 1

Combine like terms: 34 + 1 = 35
1 + -2x + x2 = 35

Factor a perfect square on the left side:
(x + -1)(x + -1) = 35

Calculate the square root of the right side: 5.916079783

Break this problem into two subproblems by setting 
(x + -1) equal to 5.916079783 and -5.916079783.

Subproblem 1

x + -1 = 5.916079783 Simplifying x + -1 = 5.916079783 Reorder the terms: -1 + x = 5.916079783 Solving -1 + x = 5.916079783 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 5.916079783 + 1 Combine like terms: -1 + 1 = 0 0 + x = 5.916079783 + 1 x = 5.916079783 + 1 Combine like terms: 5.916079783 + 1 = 6.916079783 x = 6.916079783 Simplifying x = 6.916079783

Subproblem 2

x + -1 = -5.916079783 Simplifying x + -1 = -5.916079783 Reorder the terms: -1 + x = -5.916079783 Solving -1 + x = -5.916079783 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -5.916079783 + 1 Combine like terms: -1 + 1 = 0 0 + x = -5.916079783 + 1 x = -5.916079783 + 1 Combine like terms: -5.916079783 + 1 = -4.916079783 x = -4.916079783 Simplifying x = -4.916079783

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.916079783, -4.916079783}

See similar equations:

| X+17+4x=-12-4x-16 | | -7(5x+2)=-294 | | 1/3(9x-6)-8^2=5 | | 4+7+5x= | | r=24 | | 0.6x+18.2=x-3.2 | | n-21=12 | | 66r^2h+57rh+12h= | | 8y(y)=72 | | 13600=x+(x*.45) | | 600x-0.54=100x+0.21 | | 3.5x-15=2.4x+7 | | 9x-7w+3x+6y+3y+4w= | | 3x/7x-2 | | -2x^2+20x=46 | | -x^2+2x-6x+12-16=0 | | 6q-p-7q-p= | | 14x-5+24x-5=180 | | x/15=/12/75 | | 2x+6y=10fory | | -2j^2-16j+94=0 | | t=rx | | v^2+30v=31 | | 2(2x+14)=2(5x-1) | | 10(x+4)+12=152 | | -x^2+6x+27-58=0 | | -4q^2-8q+36=0 | | -x^2+6x-31=0 | | 2q^3-2744=0 | | −​1/4​​a−4=​7/4​​a−3 | | 3(4c-1)-6=8c+3 | | 3k^2-54k=87 |

Equations solver categories