Question

if p=5 and q=3 then find the value of p2+q2_2pq

Answer 1

your answer

there are two ways to solve it

using formula or directly putting values

using formula

(p-q)2

(5-3)2 =4

directly

(5)2+(3)2-2×5×3

25+9-30=4

Answer 2

p²+q²-2pq= (p-q)²

p=5............... q=3

(5-3)²= (2)²=4

Hope it helped