Question

o prove
that the Following are
irrational numbe is
√2+√5
√7/4​

Answer 1

Answer:

Suppose a−b=r is rational.

Squaring this, a+b+2ab=r2

So, ab is irrational,

if  ab is irrational ,  this can not be hold .

therefore ,if  ab is irrational, so is a−b is rational .

 

Since,(7−42)2=49−32−562=17−562

2 is irrational ,so is 17−562 and so is .(7−42)

Step-by-step explanation:

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