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    How would you factorise x^(2) + 16x + 40.
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    completing the square maybe
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    surely you can complete the square with (x 8)^2 - 24 ?
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    (Original post by guys014)
    surely you can complete the square with (x 8)^2 - 24 ?
    Oh right. I thought it would be harder as its a 3 mark question.
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    (Original post by Maths1210)
    Oh right. I thought it would be harder as its a 3 mark question.
    if its a 3 mark question then you probably just need to write out the steps clearly so
    x^2+16x+40
    16/2 = 8
    8^2=64
    64-40=24
    (x+8)^2 - 24
 
 
 
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