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# Help needed watch

1. How do I “write down the least value of x^2+8x+2”? I have already completed the square
2. When you complete the square you get (x+4)^2-14 now you have to make this expression as small as possible so this Weill be when (x+4)^2 is 0. Can you see what the min value will be now?
3. (Original post by B_9710)
When you complete the square you get (x+4)^2-14 now you have to make this expression as small as possible so this Weill be when (x+4)^2 is 0. Can you see what the min value will be now?
-4
4. (Original post by B_9710)
When you complete the square you get (x+4)^2-14 now you have to make this expression as small as possible so this Weill be when (x+4)^2 is 0. Can you see what the min value will be now?
Wait -4 fits that but the answer is -14
5. (Original post by Reece.W.J)
Wait -4 fits that but the answer is -14
The minimum value is achieved when x=-4 but we're finding the minimum value of the expression (x+4)^2-16 , which is what when x=-4?
6. (Original post by B_9710)
The minimum value is achieved when x=-4 but we're finding the minimum value of the expression (x+4)^2-16 , which is what when x=-4?
-16 but I thought -14 because
7. (Original post by Reece.W.J)
-16 but I thought -14 because
No it's -14 you're right I just wrote it down wrong.
8. (Original post by B_9710)
No it's -14 you're right I just wrote it down wrong.
Ok ty. I’ve also done this one how do I find the maximum value for this one?

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