Eric Nicholas K's answer to sushi's Secondary 3 E Maths Singapore question.
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On the right-hand side, I see two of the three terms having (x + 1). So using x = -1 kills these two terms leaving behind C.
Now we have the value of C. Out of the remaining two terms, only one has (x - 2). So using x = 3 kills this term, leaving behind only a term in B.
Once we have found the value of B, we can replace x by any value other than -1 or 3; a good choice is 0 or 1 since a lot of the terms can be easily calculated. Now we can find the value of A.
Now we have the value of C. Out of the remaining two terms, only one has (x - 2). So using x = 3 kills this term, leaving behind only a term in B.
Once we have found the value of B, we can replace x by any value other than -1 or 3; a good choice is 0 or 1 since a lot of the terms can be easily calculated. Now we can find the value of A.
Date Posted:
5 years ago
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