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

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

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


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    (Original post by z_o_e)
    Think I understand now


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    Yeah thats fine
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    (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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    (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
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    (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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    (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
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    (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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    (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
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    (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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    (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
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    (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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    (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!
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    (Original post by Ayaz789)
    Just to make it a lot easier to factorise!
    done


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    Yep and you cannot have a negative x value as x has to be postive!
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    (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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    (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
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    (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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