Question

If 2n+² – 2n+¹ + 2n = c × 2n find the value of c​.​

Answer 1

Answer:

Step-by-step explanation:

c(2n,1)+c(2n,3)=2c(2n,2)

=(2cn,c)+(2cn,3c)=4cn,4c

=2cn,c+2cn,3c=4cn,4c

=4cn,4c=4cn,4c

=(4cn-4cn),4c=4c

=4c=4c

=4c÷4=c

=c=c