x squared-13x-30x=0

Question

I am having trouble solving this problem and would really like some help

Answer 1

By factoring: (x-15)(x+2) = 0.

The solution is now obvious.

Remember, if you cannot factor a quadratic equation, try the quadratic formula.

Answer 2

x² - 13x - 30 = 0       Assuming the third "x" is a typo.

(x - 3)(x - 10) = 0

 

x ∈ {3, 10}