Question

Pls ans this que immediately
chapter number system
class 9
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Answer 1

Answer:

Step-by-step explanation

1/$\sqrt2$+1 = 1* $\sqrt 2$-1/ root 2-1 * root 2 +1{RULE(MUST HAVE STUDIED IT IN FIRST CHAPTER CLASS-9)}(RATIONALISATION)

= root2-1/ (root2)^2-1 {a^2-b^2= (a+b)(a-b)}

=root2-1/2-1 {normal calculation used further}{must have studies in earlier classes}

=root 2-1/1= root2-1

solve the rest like this and at last add then

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