Thread: complex problem

if mod(z1)=1 mod(z2)=2 mod(z3)=3 and mod(9z1z2+4z1z3+z2z3)=12 find the value of mod(z1+z2+z3)

i know mod(z1+z2+z3)<=mod(z1)+mod(z2)+mod(z3) but how to do this

Originally Posted by prasum

if mod(z1)=1 mod(z2)=2 mod(z3)=3 and mod(9z1z2+4z1z3+z2z3)=12 find the value of mod(z1+z2+z3)

i know mod(z1+z2+z3)<=mod(z1)+mod(z2)+mod(z3) but how to do this

Use the fact that . So , , , and . Multiply out that last one to get an expression for . That will enable you to find