if x = 5-√3 / 5-√3 and y = 5+√3 / 5-√3 then evaluate x ² - y ²
Attachments:
Answers
Answered by
0
Answer:
x=
5
+
3
5
−
3
x=
5
+
3
5
−
3
×
5
−
3
5
−
3
=
2
5+3−2
15
=4−
15
y=
5
−
3
5
+
3
y=
5
−
3
5
+
3
×
5
+
3
5
+
3
=
2
5+3+2
15
=4+
15
Now,
x
2
+y
2
−5xy
=(4−
15
)
2
+(4+
15
)
2
−5(4−
15
)(4+
15
)
=(16+15−8
15
)+(16+15+8
15
)−5(4−
15
)(4+
15
)
=62−5(16−15)=62−5=57
Step-by-step explanation:
please mark me as brain list
Similar questions