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1. The first three terms in ascending powers of x in the binomial expansion of (1 + px)12 are
given by
1 + 18x + qx2
where p and q are constants.
Find the value of p and the value of q.

Im confused ... :/
2. Use binomial theorem to find value of p - there can only be one value of p to give the coefficient of the x term to be 18. And from there you find q.
.
3. (Original post by B_9710)
Use binomial theorem to find value of p - there can only be one value of p to give the coefficient of the x term to be 18. And from there you find q.
.
So I used binomial expansion and got...... 1+12px+66p^2x^2 . Now what?
4. (Original post by Starmock99)
So I used binomial expansion and got...... 1+12px+66p^2x^2 . Now what?
What must 12p be equal to?

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