(root5-root2)(root5+root2)
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use the formula a2 - b2 = ( a+ b) ( a-b). both side roots get cancelled you will get ans 3
priyanka8:
please mark as brainliest ans
wrong
can i know which chapter it is
i followed the surds method, according to that it is correct
number system
yes
Answered by
8
(√5-√2)(√5+√2) is in the form of (a+b)(a-b)
(a+b)(a-b)=a²-b²
(√5-√2)(√5+√2)=[(√5)²-(√2)²]=(5-2)=3
(a+b)(a-b)=a²-b²
(√5-√2)(√5+√2)=[(√5)²-(√2)²]=(5-2)=3
it is correct na i too answered in same method but somebody is saying wrong
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