angelhair123
2 Answers
eggplant
Go to the homework site: http://www.khanacademy.org/
| 13 years ago. Rating: 0 | |
chelleanne
2x^2+5x+3=0
( x + 1 ) ( 2x + 3 ) = 0
Remember: FOIL
F > First > x * 2x = 2x^2
O > Outer > x * 3 = 3x
I > Inner > 1 * 2x = 2x
3x + 2x = 5x
L > Last > 1 * 3 = 3
Now, finish the problem.
( x + 1 ) ( 2x + 3 ) = 0
x + 1 = 0 2x + 3 = 0
x + 1 - 1 = 0 - 1 2x + 3 - 3 = 0 - 3
x = -1 2x = -3/2
x = -3/2 or x = -1 1/2
x = -1, -3/2
| 13 years ago. Rating: 0 | |
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