simplify and verify the result-(p²+q²+r²)(pq+qr),p=2,q=-3,r=1
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Answer:
126
Step-by-step explanation:
(p²+q²+r²)(pq+qr)
[putting the given values]
=(2²+3²+1²)(2×3+3×1)
=(4+9+1)(6+3)
=14×9
=126
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