If a+b+c=9 and ab+bc+ca=40 find the value ofa^2+b^2+c^2
Answers
Answered by
3
here is your answer ..........
........
.. ...... .... .... .
........
.. ...... .... .... .
Attachments:
ankitkrpt:
mark as brainlist....
Answered by
2
We have
a+b+c=9
Squaring both sides
(a+b+c) ²=9²
Now
a²+b²+c²+2(ab+BC+ca) =81
Putting given values
a²+b²+c²+2×40=81
a²+b²+c²=81-80
a²+b²+c²=1
Hope it will help you dear.
a+b+c=9
Squaring both sides
(a+b+c) ²=9²
Now
a²+b²+c²+2(ab+BC+ca) =81
Putting given values
a²+b²+c²+2×40=81
a²+b²+c²=81-80
a²+b²+c²=1
Hope it will help you dear.
Similar questions