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    why has this come out as +7 and not -7 ?

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    (Original post by Wildnatxox)
    why has this come out as +7 and not -7 ?
    Because you chose the wrong signs.

    You are looking for two numbers which add to make -7 and multiply to make 12.

    Swap the signs on 3 and 4.
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    Hello again, i see that you're still mixing up your signs so here are the two rules you need to remember:

    Negative x Negative = Positive
    Negative x Positive = Negative
 
 
 

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