solve marked questions please.
Attachments:
Answers
Answered by
1
1. x²=(4+√15)²
=4²+(√15)²+2×4×√15
=16+15+8√15
=31+8√15
1/x=1/4+√15 this will be rationalised
=1/4+√15 ×4-√15/4-√15
=4-√15/4²-(√15)²
=4-√15
1/x²=(4-√15)²
=4²+√15²-2×4×√15
=16+15-8√15=31-8√15
x²+1/x²=31+8√15+31-8√15
=62
=4²+(√15)²+2×4×√15
=16+15+8√15
=31+8√15
1/x=1/4+√15 this will be rationalised
=1/4+√15 ×4-√15/4-√15
=4-√15/4²-(√15)²
=4-√15
1/x²=(4-√15)²
=4²+√15²-2×4×√15
=16+15-8√15=31-8√15
x²+1/x²=31+8√15+31-8√15
=62
iamyogeshsharmpa9fue:
kya ap ek notebook pr likh kr bej skte h mujhe pic
Similar questions