Question

Can yu plzz say me the answer of 2 one in detail

Answer 1

Answer:

3. (Explanation below)

Step-by-step explanation:

(√5-√2))√5+√2)

Though the identity: (a+b)(a-b) = a^2-b^2

(√5)^2-(√2)^2 (root cancelled by square)

5-2

3 (ans)

I hope it'll help you mate.

Answer 2

Answer:

follow the formula :-

(a + b) (a - b) = a² - b² .

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Answer :-

ii) a = 3 , b = root 3

a² - b² = 9 - 3

= 6 ans.

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iv) a = root 5 , b = root 2

a² - b² = 5 - 2

= 3 ans.