n^2+11n+30=0 how do i do this?

Try to find two numbers that multiply together to make 30 and also add together to make 11.

Look at the possible pairs of numbers that multiply together to make 30.  These are:

1  30

2  15

3  10

5  6

Which of these pairs when added makes 11?  Clearly, it is the last pair.  This means that your original equation can be written as (n+5)*(n+6) = 0, which means that there are two possible values for n, namely n = -5 and n = -6.

do pemdas. first parenthese exponents multiplication division addition subtraction.

First simplify the exponent since there are no parentheses, then add the rest, but it will not be simplified you will have three different terms then you have to factor it and make it equal to zero.