(k-7)(k-8)=0

Simple and best practice solution for (k-7)(k-8)=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 (k-7)(k-8)=0 equation:


Simplifying
(k + -7)(k + -8) = 0

Reorder the terms:
(-7 + k)(k + -8) = 0

Reorder the terms:
(-7 + k)(-8 + k) = 0

Multiply (-7 + k) * (-8 + k)
(-7(-8 + k) + k(-8 + k)) = 0
((-8 * -7 + k * -7) + k(-8 + k)) = 0
((56 + -7k) + k(-8 + k)) = 0
(56 + -7k + (-8 * k + k * k)) = 0
(56 + -7k + (-8k + k2)) = 0

Combine like terms: -7k + -8k = -15k
(56 + -15k + k2) = 0

Solving
56 + -15k + k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(7 + -1k)(8 + -1k) = 0


Subproblem 1
Set the factor '(7 + -1k)' equal to zero and attempt to solve:

Simplifying
7 + -1k = 0

Solving
7 + -1k = 0

Move all terms containing k to the left, all other terms to the right.

Add '-7' to each side of the equation.
7 + -7 + -1k = 0 + -7

Combine like terms: 7 + -7 = 0
0 + -1k = 0 + -7
-1k = 0 + -7

Combine like terms: 0 + -7 = -7
-1k = -7

Divide each side by '-1'.
k = 7

Simplifying
k = 7

Subproblem 2
Set the factor '(8 + -1k)' equal to zero and attempt to solve:

Simplifying
8 + -1k = 0

Solving
8 + -1k = 0

Move all terms containing k to the left, all other terms to the right.

Add '-8' to each side of the equation.
8 + -8 + -1k = 0 + -8

Combine like terms: 8 + -8 = 0
0 + -1k = 0 + -8
-1k = 0 + -8

Combine like terms: 0 + -8 = -8
-1k = -8

Divide each side by '-1'.
k = 8

Simplifying
k = 8
Solution
k = {7, 8}

See similar equations:

| 10(1200)+.20x=5x | | 3x+9=2x+8 | | 12,5x-7=5,5 | | m(2m-5)=0 | | f(x)=1.5x-4 | | 3x+9=2x+0 | | 8x+x^5= | | Y^3-2.25Y^2+0.815=0 | | -X*x+2x=0.9 | | -7x+13=6x-13 | | -7x+13=6x+13 | | 7(2x-1)=0 | | 11x^2+6n-7=0 | | 7x-2=6x-13 | | 7x-2=6x+13 | | 7x+2=6x-13 | | 7x+2=6x+13 | | a=50-30/5 | | a=30-50/5 | | 2(4s+9)=203 | | 9a+3=(4+2)*8 | | y^2/yx=0 | | 8(2l+5)=88 | | y^2/yx | | 5(a-10)=40 | | -5y^2+5y-8=0 | | 0=2x^2+4.8x | | (26+x)*2=264 | | 2x^2+4.8x=0 | | 4n-32=60 | | 4-y=2y+17 | | x+(x-5)+(x-12)=268 |

Equations solver categories