Question

add the following p-q+pq, q-r+qr, r-p+pr, p+q+r​

Answer 1

may this will work for you !!

...thank you !!

Answer 2

Given : p - q + pq, q - r + qr, r - p + pr , p+q+r​

To Find :  add the given numbers

Solution:

p - q + pq,

q - r + qr,

r - p + pr ,

p+q+r​

Adding all terms

p - q + pq + q - r + qr   + r - p + pr + p+q+r​

Combining similar term together

p - p + p  - q  + q  + q   - r  + r  + r   + pq + qr  + pr

= p + q  + r  + pq + qr  + pr

= p(q + 1) + q(r + 1)  + r(p + 1)

Learn More:

by using x2,x3,x4,+2,+3,+5 and get 49(use all of the numbers once ...

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