If p-q= 9 and pq= 36, evaluate
I :- p+q
ii :- p²+q²
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p-q = 9
(p-q)^2=9^2
p^2 + q^2 -2pq= 81
p^2+q^2 - 2×36 =81
p^2 + q^2 = 81 + 72
p^2 + q^2 = 153
(p-q)^2=9^2
p^2 + q^2 -2pq= 81
p^2+q^2 - 2×36 =81
p^2 + q^2 = 81 + 72
p^2 + q^2 = 153
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