V5 + 1
5-1
If a =
and b =
√5-1
15+1
then the value of
(a2 + ab +62)
= ?
(a? - ab +62)
4
2
Answers
Answered by
0
Answer:
kydlhclhxdkgxiyspydmgxltpyx
Step-by-step explanation:
sorry for the inconvenience but I needed free points :)
Answered by
0
Answer:
Here ab=1
& (a+b)=
5
−1
5
+1
+
5
+1
5
−1
⇒(a+b)=
4
(
5
+1)
2
+(
5
−1)
2
=
4
5+1+2
5
+5+1−25
⇒
(a+b)=3
(a
2
+b
2
)=(a+b)
2
−2ab
=9−2=7
∴
a
2
+b
2
−ab
a
2
+b
2
+ab
=
7−1
7+1
=
3
4
Step-by-step explanation:
I hope it's help you.
Attachments:
Similar questions