(4k+2)(k-10)=0

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Solution for (4k+2)(k-10)=0 equation:


Simplifying
(4k + 2)(k + -10) = 0

Reorder the terms:
(2 + 4k)(k + -10) = 0

Reorder the terms:
(2 + 4k)(-10 + k) = 0

Multiply (2 + 4k) * (-10 + k)
(2(-10 + k) + 4k * (-10 + k)) = 0
((-10 * 2 + k * 2) + 4k * (-10 + k)) = 0
((-20 + 2k) + 4k * (-10 + k)) = 0
(-20 + 2k + (-10 * 4k + k * 4k)) = 0
(-20 + 2k + (-40k + 4k2)) = 0

Combine like terms: 2k + -40k = -38k
(-20 + -38k + 4k2) = 0

Solving
-20 + -38k + 4k2 = 0

Solving for variable 'k'.

Factor out the Greatest Common Factor (GCF), '2'.
2(-10 + -19k + 2k2) = 0

Factor a trinomial.
2((-1 + -2k)(10 + -1k)) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(-1 + -2k)' equal to zero and attempt to solve: Simplifying -1 + -2k = 0 Solving -1 + -2k = 0 Move all terms containing k to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -2k = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -2k = 0 + 1 -2k = 0 + 1 Combine like terms: 0 + 1 = 1 -2k = 1 Divide each side by '-2'. k = -0.5 Simplifying k = -0.5

Subproblem 2

Set the factor '(10 + -1k)' equal to zero and attempt to solve: Simplifying 10 + -1k = 0 Solving 10 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-10' to each side of the equation. 10 + -10 + -1k = 0 + -10 Combine like terms: 10 + -10 = 0 0 + -1k = 0 + -10 -1k = 0 + -10 Combine like terms: 0 + -10 = -10 -1k = -10 Divide each side by '-1'. k = 10 Simplifying k = 10

Solution

k = {-0.5, 10}

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