Algebra
posted by G on .
Solving quardratic equations using factoring.
2X^2+2X4=0
The book says the answer is 2,1.
I got the 2,1 but not in the order of
2,1.
I used FOIL to solve. When I use 2,1 I don't can not solve. When I use
1,2. I can solve.
I am not clear.

The order is not important. The answer is x=2 or x=1
Verify by substituting for x
2(2)^2+2(2)4=0
844=0
0=0
2(1)^2+2(1)4=0
2+24=0
0=0