(x vv)(1-i)^(4)[NCERT]

If i= sqrt(-1) , prove that following (x+1+ i) (x + 1- i) (x-1 + i) (x-1-i)= x^(4) + 4

Prove that: x^4+4=(x+1+i)(x+1-i)(x-1+i)(x-1-i) .

Prove that: x^4+4=(x+1+i)(x+1-i)(x-1+i)(x-1-i)

If i= (sqrt-1) , prove that following (x+1+i) (x+ 1-i) (x-1-i) (x-1+ i)= x^(4) + 4

Dual of (x vv y) ^^ (x vv 1) = x vv x ^^ y vv y is

Dual of (x vv y) ^^ (x' vv 1) is

let (i) (p vv q)^^(p vv sim q),(ii)(p^^q)^^(q vv sim q),(iii).(p vv q)^^(p vv sim q),(iv)(p vv q)vv(p^^sim q) then which one is tautology

The negation of sim s vv(sim r^^s) is equivalent to : (1) s^^sim r(2)s^^(r^^sim s)(3)s vv(r vv sim s)(4)s^^r

Prove that: x^(4)=4=(x+1+i)(x+1-i)(x-1+i(x-1-i).)