SOLUTION: Factor {{{30z^2-87z+30}}}

Question 312609: Factor
Answer by JBarnum(2146) (Show Source): You can put this solution on YOUR website!

<---Factored

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=3969 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 2.5, 0.4. Here's your graph:

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