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8) yes x and y will always be irrational
let x=2 and y=under root 3
x+y=2+under root3(which is irrational)
9) yes
let two irrational nos. be x and y
x=under root 3
y= -(under root 3)
x+y will be 0 which is rational
and x*y will be -3 which is also rational
let x=2 and y=under root 3
x+y=2+under root3(which is irrational)
9) yes
let two irrational nos. be x and y
x=under root 3
y= -(under root 3)
x+y will be 0 which is rational
and x*y will be -3 which is also rational
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