Question

(a+b)^6=

Answer 1

(a+b)^6
=a^6+6*a^5*b+15*a^4*b^2+20*a^3*b^3+15*a^2*b^4+6*a*b^5+b^6
1 n=0
1 1 n=1
1 2 1 n=2 (A+B)^2
1 3 3 1 n=3 (A+B)^3
1 4 6 4 1 n=4 (A+B)^4
1 5 10 10 5 1 n=5 (A+B)^5
1 6 15 20 15 6 1 n=6 （A+B)^6
杨辉三角形

Answer 2

(a+b)^6=a^6+6a^5b^1+15a^4b^2+20a^3b^3+15a^2b^4+6a^1b^5+a^6

Answer 3

(a+b)^6
=a^6+6*a^5*b+15*a^4*b^2+20*a^3*b^3+15*a^2*b^4+6*a*b^5+b^6
1 n=0
1 1 n=1
1 2 1 n=2 (A+B)^2
1 3 3 1 n=3 (A+B)^3
1 4 6 4 1 n=4 (A+B)^4
1 5 10 10 5 1 n=5 (A+B)^5
1 6 15 20 15 6 1 n=6 （A+B)^6

Answer 4

a^6+6a^5b+15a^4b^2+20a^3b^3+15a^2b^4+6ab^5+b^6