Question

if p=-2,q=-1 and r=3 find the value of p3+ q3+ r3+ 3pqr​

Answer 1

Answer:

-8-1+27+3*(-3)*(-1)*3

-8-1+27+27

-9+54

45 is the answer

Answer 2

Answer:

I8 is the required answer

Step-by-step explanation:

= p3+q3+r3+3pqr

= 3(p+q+r) + 3pqr

= 3(-2+-1+3) + 3×-2×-1×3

= 3(3-3) + 3×2×3

= 3×0 + 6×3

= 0 + 18

= 18

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