x^2+7x-30 what we do is we find what 2 number multiply to get -30 and add to get 7 factor 30 30=2 times 3 times 5 we know that is has to be negative eventually so one is negative and one is positivie so we do2 factors and add 2 times 5=10 10 and -3 add 10-3=7 checks 10 times -3=-30
