15=k(x-3)(x+5)

Simple and best practice solution for 15=k(x-3)(x+5) 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 15=k(x-3)(x+5) equation: 


Simplifying
15 = k(x + -3)(x + 5)

Reorder the terms:
15 = k(-3 + x)(x + 5)

Reorder the terms:
15 = k(-3 + x)(5 + x)

Multiply (-3 + x) * (5 + x)
15 = k(-3(5 + x) + x(5 + x))
15 = k((5 * -3 + x * -3) + x(5 + x))
15 = k((-15 + -3x) + x(5 + x))
15 = k(-15 + -3x + (5 * x + x * x))
15 = k(-15 + -3x + (5x + x2))

Combine like terms: -3x + 5x = 2x
15 = k(-15 + 2x + x2)
15 = (-15 * k + 2x * k + x2 * k)
15 = (-15k + 2kx + kx2)

Solving
15 = -15k + 2kx + kx2

Solving for variable 'k'.

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

Add '15k' to each side of the equation.
15 + 15k = -15k + 2kx + 15k + kx2

Reorder the terms:
15 + 15k = -15k + 15k + 2kx + kx2

Combine like terms: -15k + 15k = 0
15 + 15k = 0 + 2kx + kx2
15 + 15k = 2kx + kx2

Add '-2kx' to each side of the equation.
15 + 15k + -2kx = 2kx + -2kx + kx2

Combine like terms: 2kx + -2kx = 0
15 + 15k + -2kx = 0 + kx2
15 + 15k + -2kx = kx2

Add '-1kx2' to each side of the equation.
15 + 15k + -2kx + -1kx2 = kx2 + -1kx2

Combine like terms: kx2 + -1kx2 = 0
15 + 15k + -2kx + -1kx2 = 0

Add '-15' to each side of the equation.
15 + 15k + -2kx + -15 + -1kx2 = 0 + -15

Reorder the terms:
15 + -15 + 15k + -2kx + -1kx2 = 0 + -15

Combine like terms: 15 + -15 = 0
0 + 15k + -2kx + -1kx2 = 0 + -15
15k + -2kx + -1kx2 = 0 + -15

Combine like terms: 0 + -15 = -15
15k + -2kx + -1kx2 = -15

Reorder the terms:
15 + 15k + -2kx + -1kx2 = -15 + 15

Combine like terms: -15 + 15 = 0
15 + 15k + -2kx + -1kx2 = 0

The solution to this equation could not be determined.

See similar equations:

| 5=2x+19 | | -x-5y=-50 | | 125c^2-80=0 | | X+-1=2 | | 1x^2+5x+8=0 | | 1/2(4x-10)=5=x-11 | | 19a^2-66a+27=0 | | 2+-1=2 | | V-4.56=7.3 | | 8-x=10 | | n(H)=n(I) | | 6.139+r=13.039 | | -4(2x-3)=2x+11 | | b/15=-4/5 | | -4(v+2)+2v+7=6v+7 | | 7[x-6]=5x-10[x+2]+2 | | 7000+90x=75y | | 144=m-9 | | -2w-4=-5w-25 | | 4x+9y=-16 | | 2(w-2)=-5w-25 | | -14=-18+x | | 17(x+3)=4(x-10)+13 | | 4-7(2b+2)=-b-7 | | (3x)/8−(4x)/3=4 | | 2d+14=-2(2d-3) | | eg;[[[3]/[7]]](1[ eg;[[[1]/[6]]]]1) | | 32y^2-81=0 | | 8=3r+1 | | m+[2m-3(2m-5n)-2m]= | | 6u+4=2(1[u-6]1) | | 7(x-5)-3=5(-6x+8)-5x |

Equations solver categories