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1. Yeah thats right
2. (Original post by Ayaz789)
Yeah thats right
This was different but gave it a go.

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3. (Original post by z_o_e)
This was different but gave it a go.

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Yeah thats right, now solve it
4. (Original post by Ayaz789)
Yeah thats right, now solve it
Think I understand now

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5. (Original post by z_o_e)
Think I understand now

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Yeah thats fine
6. (Original post by Ayaz789)
Yeah thats fine
How would I do these rectangles ?
Just need a bit of working out and steps and ill do the answer myself

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7. (Original post by z_o_e)
How would I do these rectangles ?
Just need a bit of working out and steps and ill do the answer myself

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so the area of the first triangle = 520
And the area = base* height
Therefore (2x)(x+7) = 520 and solve for x
8. (Original post by Ayaz789)
so the area of the first triangle = 520
And the area = base* height
Therefore (2x)(x+7) = 520 and solve for x
Don't understand this. :/

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9. (Original post by z_o_e)
Don't understand this. :/

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Oh sorry i mean the area of the rectangle =520
And 2x(x+7) =520
10. (Original post by Ayaz789)
Oh sory i mean the area of the rectangle =520
And 2x(x+7) =520
So it's 2x^2 + 15 = 520

Then I minus 15 from both sides?

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11. (Original post by z_o_e)
So it's 2x^2 + 15 = 520

Then I minus 15 from both sides?

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2x^2+14x & solve it like a quadratic by doi g minus 520 from both sides
12. (Original post by Ayaz789)
2x^2+14x & solve it like a quadratic by doi g minus 520 from both sides
Finding the factor bit quiet hard.

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13. (Original post by z_o_e)
Finding the factor bit quiet hard.

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Divide everything by 2 to get x^2+7x-260=0
14. (Original post by Ayaz789)
Divide everything by 2 to get x^2+7x-260=0
Oh okay.
Why do I divide it by 2?

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15. (Original post by z_o_e)
Oh okay.
Why do I divide it by 2?

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Just to make it a lot easier to factorise!
16. (Original post by Ayaz789)
Just to make it a lot easier to factorise!
done

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17. Yep and you cannot have a negative x value as x has to be postive!
18. (Original post by Ayaz789)
Yep and you cannot have a negative x value as x has to be postive!
Oh so X is always positive?

Also you know this one have I started this alright?

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19. (Original post by z_o_e)
Oh so X is always positive?

Also you know this one have I started this alright?

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Expand the whole bracket! x^2+11x+24
20. (Original post by z_o_e)
Oh so X is always positive?

Also you know this one have I started this alright?

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X is positive in this case because it's a distance, and you can't have a negative distance!

Have you heard of FOIL? You also need to multiply x by 8 and x by 3

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