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2. (Original post by ngunn)
Which methods have you learnt for solving quadratics? Have you done any working so far?

EDIT: Oops I just realised it says by bompleting the square!
3. (Original post by alow)
Which methods have you learnt for solving quadratics? Have you done any working so far?

EDIT: Oops I just realised it says by bompleting the square!
i dont understand any of it
4. (Original post by ngunn)
i dont understand any of it
For the first one start by finding an expression of the form where a and c are constants and is equal to

So,

HINT: Find a by halving the coefficient of the term in the origional quadratic (which in the first question is 18).
5. are ok thanks
6. (Original post by ngunn)
i dont understand any of it
Don't you think you should speak to your teacher then?
7. (Original post by alow)
For the first one start by finding an expression of the form where a and c are constants and is equal to

So,

HINT: Find a by halving the coefficient of the term in the origional quadratic (which in the first question is 18).
can you give me the answer to the first one so i can see how it worked please
8. (Original post by ngunn)
can you give me the answer to the first one so i can see how it worked please
. Hope that helped...
9. (Original post by ngunn)
can you give me the answer to the first one so i can see how it worked please
I'll give you the start:

Can you see how to continue this and find the values of x? If not, as Mr M said, it's probably better to go to your teacher.
10. (Original post by keromedic)
. Hope that helped...
how do i get the two possible values for x from that
11. (Original post by ngunn)
how do i get the two possible values for x from that
I don't know what you're asking, sorry.
12. (Original post by ngunn)
can you give me the answer to the first one so i can see how it worked please
That looks like it's MyMaths. Have you tried doing the lesson on there?
13. (Original post by ngunn)
how do i get the two possible values for x from that
Because if you initially brought all the constants over two one side, then you know that and you can solve this (remembering the +- when square rooting) to find the two possible values of x.

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