Question

solve 8m^2 + 20m= 12 for m by factoring

Answer 1

4(2m^2+5m)=12

Answer 2

subtract 12 both side first

Answer 3

Thanks

Answer 4

we are not done .............

Answer 5

:)

Answer 6

8m^2+20m=12
factor out the 4
2m^2+5m=3
move 3 to the other side
2m^2+5m-3=0
factor out the trinomial,
find 2 numbers that when they multiply, you get -3 and when they add up, you get 5.
(2m-1)(m+3)=0
zero property
2m-1=0 and m+3=0
2m=0+1=1
m=1/2
-----------------
m=0-3=-3
Answer: 1/2, -3.

Answer 7

that's what you should get after subtracting 12 both side can you find GCF now ??