Question

Please only give correct answers (std 11) sum​

Answer 1

Hҽყα

ᴛʜᴇ ᴀɴꜱᴡᴇʀ ꜰᴏʀ ʏᴏᴜʀ Qᴜᴇʀʏ ɪꜱ:-

x² + 1/x² = 14

(x + 1/x)² -2.x.1/x = 14

(x + 1/x )² -2 = 14

(x + 1/x )² = 16

take square root both sides

(x + 1/x) = 4

then,

x³ + 1/x³ = ( x + 1/x)³ - 3.x.1/x(x + 1/x)

= ( x +1/x)³ -3(x + 1/x)

= (4)³ -3(4)

= 64 - 12

= 52

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Answer 2

Answer:

please mark as brilliant