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4.Rationalize the denominator of 1/√18-√32 |
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Answer»
+ 32
= 27
− 18
48
+ 32
× 27
+ 18
27
+ 18
= 27−18 ( 48
+ 32
)( 27
+ 18
)
[∵a 2 −b 2 =(a−b)(a+b)] = 27−18 (48×27+48×18+32×27+32×18)
= (1296+864+864+576)
= 9 3600
=400 verified_toppr Answer VERIFIED by Toppr View 270 VIEWS |
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