Question

r^2+13r-30=0 answer please thanks

Answer 1

factor as
\[(r+15)(r-2)=0\] and then go form there

Answer 2

>.<

Answer 3

where did the 15 and 2 come from thanks

Answer 4

do you know about factoring? The 15 and 2 are both factors of 30. 15x2= 30
in this case you need two factors that add to make a positive 13.

Answer 5

it's a 13r though, where does the r go then?

Answer 6

and also where does the 13 go his equation was (r+15)(r-2)=0 wheres the 13 ?

Answer 7

anyone here?

Answer 8

hello? lol