how should I have to solve this and by using which identity.....
plzz ans it fast...
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Answered by
4
Heya mate!!
Here's your answer!!
You can use the identity a² - b² = (a+b)(a-b)
Solving the question,
α×β = (1 + √2) (1 - √2)
= 1² - (√2)²
= 1 - 2
= (-1)
Τherefore the answer is (-1).
Hope it helps you!!
Cheers ☺☺
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#foreverJungkook
Answered by
1
Answer:
-1
Step-by-step explanation:
(1+√2)(1-√2)
1 square +(√2)the whole square { using identity (a)squre+(b)squre=<a+b><a-b>}
=1-2
=-1
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