if a+b=6 and ab=8,evaluate (I) a square +b square and (ii)a-b
Answers
Answered by
0
Step-by-step explanation:
a+b=6
ab=8
a=6-b
(6-b)b=8
b^2-6b+8
b=4,2
by substituting
a=2,4
a^2+b^2=a^2+b^2+2ab
=4+16+16
=36
a-b=2-4=-2
a-b=4-2=2
Similar questions