(x+7)(x-2)=0

Simple and best practice solution for (x+7)(x-2)=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-2)=0 equation:


Simplifying
(x + 7)(x + -2) = 0

Reorder the terms:
(7 + x)(x + -2) = 0

Reorder the terms:
(7 + x)(-2 + x) = 0

Multiply (7 + x) * (-2 + x)
(7(-2 + x) + x(-2 + x)) = 0
((-2 * 7 + x * 7) + x(-2 + x)) = 0
((-14 + 7x) + x(-2 + x)) = 0
(-14 + 7x + (-2 * x + x * x)) = 0
(-14 + 7x + (-2x + x2)) = 0

Combine like terms: 7x + -2x = 5x
(-14 + 5x + x2) = 0

Solving
-14 + 5x + x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-7 + -1x)(2 + -1x) = 0

Subproblem 1

Set the factor '(-7 + -1x)' equal to zero and attempt to solve: Simplifying -7 + -1x = 0 Solving -7 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1x = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1x = 0 + 7 -1x = 0 + 7 Combine like terms: 0 + 7 = 7 -1x = 7 Divide each side by '-1'. x = -7 Simplifying x = -7

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-7, 2}

See similar equations:

| 6x^2+5x+14=0 | | 20=-2(24-b)+3(b-4) | | 3x+34=10x-29 | | 8-3x+4=6-x | | 4a+5c-2a+10c= | | x^2+6x-27=3x-5 | | m^4+2m^3+3m^2+2m+1=0 | | m^4+2m^3+3m^2+1=0 | | 3x-8-2x=0 | | 10x+6=66 | | n*7+20=76 | | x^2-10x-16=0 | | 12x-28=14x-14 | | v^2-2v+1-64g^2=0 | | 324.2-58.5x+1.25x^2=0 | | 25a^2-60af+36f^2=0 | | -x-5=4 | | n*9-7=47 | | 6x+3=2x+-2 | | 163-5x=40x+23 | | 2(4x+12)+4x=12 | | (n-8)*10=70 | | 24x-12=5 | | (n-6)*2=8 | | 324.2-58.5x-1.25x^2=0 | | 12*2=24 | | 122-6x=3x+5 | | ln(6x)-ln(2)=12 | | 12*2= | | 3333444/578843226677+6= | | 52-5x=4x+15 | | (n+4)*6=54 |

Equations solver categories