i) If P = -2,q = -1, and r = 3. Find the value of
P3 + q3 + r3 + 3pqr
Answers
Answered by
4
Answer:
Substituting p=−2,q=−1 and r=3 in the given expression, we get
p
3
+q
3
+r
3
+3pqr
=(−2)
3
+(−1)
3
+(3)
3
+3(−2)(−1)(3)
=(−2×−2×−2)+(−1×−1×−1)+(3×3×3)+3(−2×−1×3)
=−8−1+27+18
=−9+45
=36
∴p
3
+q
3
+r
3
+3qpr=36
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Answered by
4
Answer:
36
Step-by-step explanation:
-2³+(-1)³+3³+3*(-2)*(-1)*(3)
-8-1+27+18
-9+45
36
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