Question

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c. 2pqr – 7p²+qr + 4pq²r, –3p²qr + 9pqr – 2pr²,6pr²-9pqr² ​

Answer 1

Answer:

$2pqr - {7p}^{2} + qr + 4p {q}^{2} r + ( - 3) {p}^{2} qr + 9pqr - 2p {r}^{2} + 6p {r}^{2} - 9pq {r}^{2} \\ = 11pqr - 7 {p}^{2} + qr+ 4p {q}^{2} r - 3{p}^{2} qr + 4p {r}^{2}- 9pq {r}^{2}$

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