Question

prove that -7 by 2 + root 5 is irrational​

Answer 1

First assume the given equation is rational

Rational numbers cand be expressed in the form p square / q square

Step-by-step explanation:

Equate the 2/root 5 with it

take 2 to the right side

in the left we have 1/root5=p square/q spuare by 2

we know rational divided by rational is rational

but this contradict the fact that root 5 is irrational

so our assumption in wrong

thus2/root5 is irrational

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