Question

x2 + 13x + 30 = 0.

Answer 1

1. factor and find x value that gets you zero
2. quadratic equation

Answer 2

i dont understand these

Answer 3

When you factor the equation, you get the following:

(x+10)(x+3)=0

Now set x+10=0 and you get x=-10

Set the other part x+3=0 and you get x=-3

Therefore, x=-10

and x=-3

To prove the correctness of the answer substitute in the values:
(-10+10)(-10+3) and you get zero
(-3+10)(-3+3) and once again you get zero