Originally Posted by shipwreck ok - so for my problem then...
(3x^2 - x - 1 + a) - (3x^2 - x - 1),
and then combine all like terms? is that right though? that doesn't feel right, as everything cancels out obviously, leaving only a behind. you are right that that is not right
look at my post again. whatever is in brackets, we replace x with it. for the first part, that is not what you did. you wrote g(x) and then added a at the end. that is not what my post told you to do
look at the bc + d example
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[3(x+a)^2 - (x+a) -1)] - 3x^2 -x - 1
is that more like it?
Originally Posted by shipwreck [3(x+a)^2 - (x+a) -1)] - 3x^2 -x - 1
is that more like it? almost. missing some brackets. see where?
and the red parentheses shouldn't be there
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