Question

3. If p = - 3, q = 0, r = 2, find the value of-
(a) p + q + r + 1
(b) 2pq + 3 qr - 4pr​

Answer 1

Answer: 101

Step-by-step explanation: Given expression is,

p3 +q  3  −r  3  −3pqr

Put the value of p=4, q=−3 ,r=2, we get

p  3  +q3  −r  3  −3pqr =(4)  3  +(−3)  3  −(2)  3  −3×4×−3×2

=64−27−8+72

=136+−35=101

Answer 2

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