owen91
contestada

Please help I have ten minutes left!

What is the coefficient of the last term in the binomial expansion of (x+1)^9?

A) 0
B) 1
C) 9
D) 10

Respuesta :

universoulllmocha
The correct answer would be : B) 1

The binomial expansion of (x+1)9 is
=9C0x9+9C1x8+9C2x7+...+9C0

Hence, the coefficient of last 10th term in the above binomial expansion

=9C0

=1

Answer:

B. 1

Step-by-step explanation:

This is because a coefficient not because there is a 1 in the equation but because a coefficient is the number before a variable

Examples:

4x-8 4 is the coefficient

5+8x 8 is the coefficient

My teacher always said there is an invisible 1 before each variable

So basically (1x+1)^9 is your equation but the one is hidden.

I hope this helps!

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