If `vecu=veca-vecb,vecv=veca+vecb and |veca|=|vecb|=2,` then `|vecuxxvecv|` is equal to

If |veca|=2,|vecb|=3 and veca.vecb=4 , then |veca-vecb| is equal to

If |veca|=2, |vecb|=3 and |2veca-vecb|=5 , then |2veca+vecb| equals

If |veca|=|vecb| , then (veca+vecb).(veca-vecb) is equal to

If |veca|=|vecb| , then (veca+vecb).(veca-vecb) is equal to

If (veca+vecb).(veca-vecb)=8 and |veca|=8(vecb) then find |vecb| .

If veca and vecb are vectors such that |veca|=2,|vecb|=3 and veca*vecb=4 , then |veca-vecb| is equal to :

Let veca,vecb,vecc be the three vectors such that veca.(vecb+vecc)+vecb.(vecc+veca)+vecc.(veca+vecb)=0 and |veca|=1,|vecb|=4,|vecc|=8, then |veca+vecb+vecc| equals :

If |veca+vecb|=|veca-vecb| show that veca_|_vecb .

If |veca+vecb|=|veca-vecb| show that veca_|_vecb .