Question

U
p(p-q+r) +9(-p+q+r) -r(p+q+r)​

Answer 1

You want me to simplify it?

Answer:

p² - r² - pq + 9r - qr

Step-by-step explanation:

  p(p - q + r) + 9(-p + q + r) - r(p + q + r)​

= (p² - pq + pr) + (-9p + 9p + 9r) - (pr + qr + r²)

= p² - pq + pr - 9p + 9p + 9r - pr - qr - r²

= p² - r² - pq + pr - pr - 9p + 9p + 9r - qr

= p² - r² - pq + 9r - qr

Hope it's helpful.