Question

begin{tabular}{c|ccc|}
Ef & 1 & ( a ) & ( a^{2} )
( c-a^{prime}(b-a) ) & 0 & 1 & ( b+9 )
0 & 1 & ( c+9 )
end{tabular}
( ((-a)(b-a)(c+a-b-a) )
( Rightarrow(a-b)(b-c)(c-a) )

# 11 a a?l Prove that 1 b b2 = (a - b)(b - c)(c - a). 1 cc |

Solution