7k^2-53k-90=0

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Solution for 7k^2-53k-90=0 equation:


Simplifying
7k2 + -53k + -90 = 0

Reorder the terms:
-90 + -53k + 7k2 = 0

Solving
-90 + -53k + 7k2 = 0

Solving for variable 'k'.

Factor a trinomial.
(-10 + -7k)(9 + -1k) = 0

Subproblem 1

Set the factor '(-10 + -7k)' equal to zero and attempt to solve: Simplifying -10 + -7k = 0 Solving -10 + -7k = 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 + -7k = 0 + 10 Combine like terms: -10 + 10 = 0 0 + -7k = 0 + 10 -7k = 0 + 10 Combine like terms: 0 + 10 = 10 -7k = 10 Divide each side by '-7'. k = -1.428571429 Simplifying k = -1.428571429

Subproblem 2

Set the factor '(9 + -1k)' equal to zero and attempt to solve: Simplifying 9 + -1k = 0 Solving 9 + -1k = 0 Move all terms containing k to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1k = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1k = 0 + -9 -1k = 0 + -9 Combine like terms: 0 + -9 = -9 -1k = -9 Divide each side by '-1'. k = 9 Simplifying k = 9

Solution

k = {-1.428571429, 9}

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