Question

If p + q = 12 and pq = 22, then the value of p² + q² is *
-100
100
50
-50​

Answer 1

Answer:

(p+q)²=p²+q²+2pq

(12)²=p²+q²+2×22

144=p²+q²+44

p²+q²=144-44=100

therefore, p²+q²=100

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Answer 2

Answer:

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