Question

গ) যদি p = a + b + c, q = a – b - c এবং r = b - c+ a হয় তবে, 2p + 3q - 4r = কত ?​

Answer 1

Answer:

See the attachment!

Step-by-step explanation:

Hope this help

Answer 2

Answer:

Given expression is,

2p+3q+4r+pqr

Substituting the values p=−1, q=2 , r=3, we get

   2p+3q+4r+pqr

=2×(−1)+(3×2)+(4×3)+(−1)×2×3

=−2+6+12−6=10