Question

What is the co-efficient of x in the expression x/2+y+z
​

Answer 1

Answer:

(x+y+z)  

4

=  

4

C  

0

​

x  

0

(y+z)  

4

+  

4

C  

1

​

x(y+z)  

3

+  

4

C  

2

​

x  

2

(y+z)  

2

+  

4

C  

3

​

x  

3

(y+z)+  

4

C  

4

​

x  

4

(y+z)  

3

 

We are intended in term   4C  

2

​

x  

2

(y+z)  

2

 

4

C  

2

​

x  

2

(y+z)  

2

=  

2

4×3

​

x  

2

(y  

2

+z  

2

+2yz)

=6x  

2

y  

2

+6x  

2

z  

2

+  

12x  

2

yz

​

 

coefficient of x  

2

yz→12

Step-by-step explanation: