Eric Nicholas K's answer to Irah Athirah's Secondary 3 A Maths Singapore question.
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We need to tackle each expansion separately. In effect, you have to treat (2 - kx)^5 and (3 + x)^6 as two separate expansions before combining them with the +.
If you are not comfortable with this method, you can also expand the expansions fully to x^3.
If you are not comfortable with this method, you can also expand the expansions fully to x^3.
Date Posted:
5 years ago
Thank you so much!
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