if x+1/x=3 evaluate xcube -1/xcube
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it's quite simple
use quadratic formula after converting the given data to a eqn
then use {(-b) +/- (root of b sq. - 4ac)}/(2a)
use quadratic formula after converting the given data to a eqn
then use {(-b) +/- (root of b sq. - 4ac)}/(2a)
ALYBSN:
it is simple
first multiply the whole eqn. by x
you'll get x sq. + 1 = 3x
it's same as x sq. - 3x + 1
no
what do you mean
the ans is wrong
how
explain pls
it's right after getting the 2 values of x substitute in the eqn. xcube - 1/xcube
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