SOLUTION: {{{4k(k+5)=5}}}

Question 439757:
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
4k(k+5)=5
4k^2+20k=5
4k^2+20k-5=0

Solved by pluggable solver: SOLVE quadratic equation with variable

Quadratic equation (in our case ) has the following solutons:

For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=480 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0.238612787525831, -5.23861278752583. Here's your graph:

.
Ed

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