Question

can u pls answer this question:(√5-√2)(√5+√2)

Answer 1

Hey dear!!

Here's your answer

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$( \sqrt{5} - \sqrt{2} )( \sqrt{5} + \sqrt{2} ) \\ = { (\sqrt{5}) }^{2} - {( \sqrt{2}) }^{2} \\ = 5 - 2 \\ = 3$

The answer is 3.

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Hope it helps!!

Answer 2

When root of same number are multiply with each other then its value is same number.
√2 ×√2=(√2)²=2
√5 ×√5=(√5)²=5
This equation is in the form of
(a-b)(a+b)=a²-b²
Hence ,
(√5-√2)(√5+√2)=5-2=3
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