Question

Answer these question and enjoy 60 -65 points . hey guys today's jingalala Saturday question is :-
1.) if a=√2+1 then find the value of a- 1
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a
2.)give a reson why u want to win this contest

NOTE :- this is a contest which is held by me on every Saturday and you can also win points everyday by giving answer of "question of the day" contest. after this i will do one more contest in next 20 minutes get ready.

regards,
andy245

Answer 1

Answer:

a - 1 = √2 -2 _______( Answer )

Step-by-step explanation:

Given ,

a = √2-1

To find ,

a-1

a-1 = (√2-1) -1

Now opening the brackets to do simplification .

We get ,

a - 1 = √2 -1 -1

Now , adding rational numbers together and irrational number together. There is only one irrational number i.e √2

We get :

a - 1 = √2 -2 _______( Answer )

Answer 2

a = √2-1

To find ,

a-1

a-1 = (√2-1) -1

Now opening the brackets to do simplification .

We get ,

a - 1 = √2 -1 -1

Now , adding rational numbers together and irrational number together. There is only one irrational number i.e √2

Therefore,

a - 1 = √2 -2