Question

maths class 9th problem please help me






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Answer 1

Answer:

Step-by-step explanation:

(√5-√2)²

as we know,(a-b)²= a²+b²-2ab.

so..

(√5)²+(√2)²-2*√5*√2

[because, √a*√a=a]

5+2-2√10

7-2√10 ..Ans