(k+4)(k-7)=0

Simple and best practice solution for (k+4)(k-7)=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+4)(k-7)=0 equation: 


Simplifying
(k + 4)(k + -7) = 0

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

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

Multiply (4 + k) * (-7 + k)
(4(-7 + k) + k(-7 + k)) = 0
((-7 * 4 + k * 4) + k(-7 + k)) = 0
((-28 + 4k) + k(-7 + k)) = 0
(-28 + 4k + (-7 * k + k * k)) = 0
(-28 + 4k + (-7k + k2)) = 0

Combine like terms: 4k + -7k = -3k
(-28 + -3k + k2) = 0

Solving
-28 + -3k + k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(-4 + -1k)(7 + -1k) = 0


Subproblem 1
Set the factor '(-4 + -1k)' equal to zero and attempt to solve:

Simplifying
-4 + -1k = 0

Solving
-4 + -1k = 0

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

Add '4' to each side of the equation.
-4 + 4 + -1k = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -1k = 0 + 4
-1k = 0 + 4

Combine like terms: 0 + 4 = 4
-1k = 4

Divide each side by '-1'.
k = -4

Simplifying
k = -4

Subproblem 2
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
Solution
k = {-4, 7}

See similar equations:

| 7-5=-5x-6x+7 | | 14a=10 | | P+8=14.8 | | 5a+6=12+3a | | 7x-6=-111 | | 9X=15-3X | | (5a+4)(a+3)=0 | | 7y+30=9y-2 | | g-21=-9 | | 3cosx=-5 | | 50+4.36s=7.4 | | 2x+5x+4=8 | | 15-4x/3x10 | | (6w+5)(6w-5)= | | -19x-14=-166 | | 50-4.36s=7.4 | | (3k-4)(k-5)=0 | | 2x+4x-5x+22+(-7)=18 | | -19x-14=166 | | X-12=2x-10 | | 48x+56x+3=x+11 | | 2(9m-2)=20 | | 3n^2=6n+1 | | 6x+9x^3= | | 6x-34=-94 | | f(x)=4x^4-x^4 | | 3x-56=46 | | -40=3x+2 | | 3(-8x+2)=15 | | x+77+177+x=180 | | -2/3(2x-6)=8 | | a[x-(-1)][x-(-3-5i)][x-(-3+5i)]=0 |

Equations solver categories