Help me plz!
- Thread starter Maria_010
- Start date
- Joined
- Feb 4, 2004
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For the first one, take the common factor of -2 out front, and then factor what remains. Hint: What factors of 13 add up to 14?
For the second one, complete the square. The general process is:
1) move the loose number ("81" in this case) over with the "y"
2) factor out whatever is multiplied on the squared term ("-9" in this case)
3) take half of the coefficient remaining on the linear term ("-8" in this case), square it, and add to both sides; remember to multiply on the y-side by whatever you factored out in (2)
4) convert the non-y side to perfect-square form; move the loose number back over from the y-side
5) read the vertex off the equation
If you get stuck, please reply showing how far you have gotten. Thank you.
Eliz.
For the second one, complete the square. The general process is:
1) move the loose number ("81" in this case) over with the "y"
2) factor out whatever is multiplied on the squared term ("-9" in this case)
3) take half of the coefficient remaining on the linear term ("-8" in this case), square it, and add to both sides; remember to multiply on the y-side by whatever you factored out in (2)
4) convert the non-y side to perfect-square form; move the loose number back over from the y-side
5) read the vertex off the equation
If you get stuck, please reply showing how far you have gotten. Thank you.
Eliz.