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