Math, asked by kaptansinghmandahar, 10 months ago

ifx^2+1/x^2=14,find the value of8a}-27b}​

Answers

Answered by himanshubairagee
0

Answer:

52

Step-by-step explanation:

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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Answered by sonusharma45
1

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