the 2nd one pls help me
Attachments:
Answers
Answered by
1
X+ 1/x = 9
Taking cube on both sides,
(x+ 1/x)^3 = 729
now expanding using
(a+b)^3= a^3 + b^3 + 3ab(a+b)
we get, x^3 + (1/x)^3 = 702.
Taking cube on both sides,
(x+ 1/x)^3 = 729
now expanding using
(a+b)^3= a^3 + b^3 + 3ab(a+b)
we get, x^3 + (1/x)^3 = 702.
Attachments:
samarthg59:
hi
can u give me your WhatsApp no. having 1 doubt
Similar questions