(x-2)(x+10)=10

Simple and best practice solution for (x-2)(x+10)=10 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-2)(x+10)=10 equation:


Simplifying
(x + -2)(x + 10) = 10

Reorder the terms:
(-2 + x)(x + 10) = 10

Reorder the terms:
(-2 + x)(10 + x) = 10

Multiply (-2 + x) * (10 + x)
(-2(10 + x) + x(10 + x)) = 10
((10 * -2 + x * -2) + x(10 + x)) = 10
((-20 + -2x) + x(10 + x)) = 10
(-20 + -2x + (10 * x + x * x)) = 10
(-20 + -2x + (10x + x2)) = 10

Combine like terms: -2x + 10x = 8x
(-20 + 8x + x2) = 10

Solving
-20 + 8x + x2 = 10

Solving for variable 'x'.

Reorder the terms:
-20 + -10 + 8x + x2 = 10 + -10

Combine like terms: -20 + -10 = -30
-30 + 8x + x2 = 10 + -10

Combine like terms: 10 + -10 = 0
-30 + 8x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '30' to each side of the equation.
-30 + 8x + 30 + x2 = 0 + 30

Reorder the terms:
-30 + 30 + 8x + x2 = 0 + 30

Combine like terms: -30 + 30 = 0
0 + 8x + x2 = 0 + 30
8x + x2 = 0 + 30

Combine like terms: 0 + 30 = 30
8x + x2 = 30

The x term is 8x.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8x + 16 + x2 = 30 + 16

Reorder the terms:
16 + 8x + x2 = 30 + 16

Combine like terms: 30 + 16 = 46
16 + 8x + x2 = 46

Factor a perfect square on the left side:
(x + 4)(x + 4) = 46

Calculate the square root of the right side: 6.782329983

Break this problem into two subproblems by setting 
(x + 4) equal to 6.782329983 and -6.782329983.

Subproblem 1

x + 4 = 6.782329983 Simplifying x + 4 = 6.782329983 Reorder the terms: 4 + x = 6.782329983 Solving 4 + x = 6.782329983 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = 6.782329983 + -4 Combine like terms: 4 + -4 = 0 0 + x = 6.782329983 + -4 x = 6.782329983 + -4 Combine like terms: 6.782329983 + -4 = 2.782329983 x = 2.782329983 Simplifying x = 2.782329983

Subproblem 2

x + 4 = -6.782329983 Simplifying x + 4 = -6.782329983 Reorder the terms: 4 + x = -6.782329983 Solving 4 + x = -6.782329983 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + x = -6.782329983 + -4 Combine like terms: 4 + -4 = 0 0 + x = -6.782329983 + -4 x = -6.782329983 + -4 Combine like terms: -6.782329983 + -4 = -10.782329983 x = -10.782329983 Simplifying x = -10.782329983

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.782329983, -10.782329983}

See similar equations:

| 5x+4=9x-8 | | 7t-10=5t-6 | | 7x+3x-20=x-2 | | 0.3x-6=15 | | 6c+8=c-107 | | 6(3y+2)=38 | | 5+4-2x=-(x-8) | | 5/3x10 | | 5x+2y+z=360 | | d-300=9d+4 | | 15=5+5x | | -6x-62=5x-7 | | (35ht-28ht-14ht)/7= | | 2x^3y^3/4y^2 | | 32=5y+2 | | 5+3x+-37=6x+23-8x | | 20=6+2y | | -16h=122 | | ln(5x+2)=3.3 | | 6t+34= | | 40+(a*12)=440-(8*40) | | 7m-m=18 | | x^4-4x^4= | | 8=×^3/2 | | a*12=440-(8*40) | | 5x+18y=23 | | 3x^2+5.7x+19=0 | | 2/x-1/y=4 | | (8*40)+(a*12)=440 | | -2x=162 | | (7x^2+5x-9)-(2x^2+3x-7)= | | 5m+4+2m=15-4m |

Equations solver categories