On Yang Hui triangle (a+b)5= (a+b)6= (a+b)7= (a+b)8= 5.6.7.8 are all power

On Yang Hui triangle (a+b)5= (a+b)6= (a+b)7= (a+b)8= 5.6.7.8 are all power


(a+b)5=a5+5*a4b+10*a3b2+10*a2b3+5*ab4+b5(a+b)6=a6+6*a5b+15*a4b2+20*a3b3+15*a2b4+6*ab5+b6(a+b)7=a7+7*a6b+21*a5b2+35*a4b3+35*a3b4+21*a2b5+7*ab6+b7(a+b)8=a8+8*a7b+28*a6b2+56*a5b3+70*a4b4+56*a3b5+28*a2b6+...