Question

if p = -4, q = 0, r = 1 , find the value of 2pq + 3qr - 4pr​

Answer 1

2(-4)(0)+3(0)(1)-4(-4)(1)

= 0 + 0 + 16

= 16 is the answer.

Answer 2

Question:

If p = -4, q = 0, r = 1 . Find the value of 2pq + 3qr - 4pr​

Given:

The values of p , q and r are -4 , 0 and 1 respectively

To Find:

The value of 2pq + 3qr - 4pr​

Solution:

2pq + 3qr - 4pr​

$2(-4)(0) + 3(0)(1)- 4(-4)(1)\\\\\\(-8\times0)+(3\times0)+16\\\\\\0+0+16\\\\\\=0+16\\\\\\=16$

Answer:

2pq + 3qr - 4pr​ = 16

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