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20. if x = ( 4 - _/15 ) find the valie of ( x^2 + 1/×^2 |
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Answer» Answer:
⇒ x
= 2− 3
1
=2+ 3
(x 2 + x 2
1
)=(x+ x 1
) 2 −2=(2− 3
+2+ 3
) 2 −2=14 (x 2 − x 2
1
)=(x− x 1
)(x+ x 1
)=(4×−2 3
)=−8 3
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