Question

Factor the expression m^2-4m-21.

Answer 1

find two number when multiplied it gives you -21, and when add it gives you -4m

Answer 2

ooo wow simple thanks!

Answer 3

no problem

Answer 4

so it would be -7 and 3

Answer 5

yes, when you put them in factorial form, it would be:
(m-7)(m+3)

Answer 6

alright thanks!

Answer 7

welcome :)

Answer 8

so it would be -7 and 3

Answer 9

if you want to solve for the m s
set them equal to zero, so
(m-7)=0 ---> add 7 to both sides
m = 7

and

(m+3)=0--->subtract 3 to both sides
m= -3