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No bother, happens to me all the time.
Oh, of course! I was making a really stupid mistake.
from which you see 10a^3 is the constant term.
10 a^3 = - 270
a^3 = - 27
a = -3
Your latexing did not come out.
That is derived from the binomial theorem. You only have to solve the equation.
hello! so, I've came accross a problem I can't solve at all :c. The problem is as it follows:
That's actually the right answer, but I can't figure out what was done to solve this problem... :c Can you guys explain it to me?