Question

Add : p (p - 9), (q - r) and r (r - p)
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Answer 1

Answer:

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

= p+p-9+q-r+r+r-p

= p-9+q+r

= p+q+r-9

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Answer 2

Answer:

$p(p - 9) + (q - r) + r(r - p) \\ p + p - 9 + q - r + r + r -p \\ p + q + r - 9 \\ hope \: it may \: helps \: you......$