Question

1+a+b+c+ab+bc+ca+abc​

Answer 1

✷ANSWER:-✷

1 + a + b + c + ab + bc + ca + abc

Just rejig things

= 1 + a + b + ab + c + ca + bc + abc

= 1*(1 + a) + b*(1 + a) + c*(1 + a) + bc*(1 + a)

= (1 + a) * (1 + b + c + bc)

= (1 + a) * {1*(1 + b) + c*(1 + b)}

= (1 + a) * (1 + b) * (1 + c).