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Why bother with a post grad course - waste of time? 17-10-2016
1. Just needed help on these questions and if someone can check if i did them correctly thank you so much ♡ image is below X
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3. Yeah you did them correctly, well done!
4. The first one both solution are right but the second one the factors should be (x-4) (x+3) so x=4 and x=-3
and you can make sure your solutions are right by multiplying the brackets you found and if you get the same quadratic equation as the start so your xs are right if not so u have factorised it wrong
5. (Original post by iMacJack)
Yeah you did them correctly, well done!
Thank you so much, that's all I needed to check x
I had a feeling I made a mistake in the second one because I'm not so confident on quadratics.

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6. No 2 is wrong because you need -12
7. (Original post by iMacJack)
Yeah you did them correctly, well done!
she did no 2 wrong
8. Oh yes I think you did sorry! Second one should be (x-4)(x+3) - I skim read it as +3!

Ayaz789 z_o_e
9. (Original post by z_o_e)
Thank you so much, that's all I needed to check x
I had a feeling I made a mistake in the second one because I'm not so confident on quadratics.

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It should be (x-4)(x+3) Just a slight mistake, dw about it!
10. (Original post by Ayaz789)
No 2 is wrong because you need -12
Yess i knew it.

How do i change it?

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11. (Original post by iMacJack)
Oh yes I think you did sorry! Second one should be (x-4)(x+3) - I skim read it as +3!

Ayaz789 z_o_e
Haha yeah its fine , i make many silly mistakes myself
12. (Original post by z_o_e)
Yess i knew it.

How do i change it?

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It should be (x-4)(x+3) Just a slight mistake, dw about it!
13. (Original post by z_o_e)
Yess i knew it.

How do i change it?

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You have broken it up into
x^2 - 4x - 3x - 12 = 0
When it should be
x^2 - 4x + 3x - 12 = 0

14. (Original post by Ayaz789)
It should be (x-4)(x+3) Just a slight mistake, dw about it!
Ohhh I made a little mistake with the sign haha

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15. Thank you guys for the replies!

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16. (Original post by z_o_e)
Ohhh I made a little mistake with the sign haha

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Yeah perfect , keep going!
17. (Original post by Ayaz789)
Yeah perfect , keep going!

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I don't understand this part. When you have odd numbers and you can't find what goes into it and when you add and take them away you get 2.
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18. (Original post by z_o_e)
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I don't understand this part. When you have odd numbers and you can't find what goes into it and when you add and take them away you get 2.
Okay so you always equal the right hand side to 0 , so take away 5 from both sides first!
19. (Original post by z_o_e)
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I don't understand this part. When you have odd numbers and you can't find what goes into it and when you add and take them away you get 2.
So you get t^2+2t-24=0 . then carry on from that
20. (Original post by Ayaz789)
So you get t^2+2t-24=0 . then carry on from that

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