Question

simplify and verify the result-(p²+q²+r²)(pq+qr),p=2,q=-3,r=1​

Answer 1

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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