Binomial theorem/Series
I need help with questions 7 and 18.
How does one solve these? I multiplied (1+x)³⁰ and (1-x)³⁰ for Q7, but got stuck midway. For Q18, I got 0, but the answer is -30C15. Idk where I went wrong.
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Couldn't find an attached image in the last 10 messages.
Yes I marked the answer key wrong as well in the beginning
@Apu
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🤦♂️ I took coeff.x¹⁰ because that was the difference. that's why I went wrong.
Oh yeah, this makes sense.
Got it.
+solved @hithav
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