Question

Question 87 (v)

Write the greatest common factor in the following terms.

$21pqr,-7p^2{q}^2{r}^2,49p^{2}qr$

Answer 1

We have,
$21pqr=7\times 3\times p\times q\times r$
$-7p^2{q}^2{r}^2=-1\times 7\times p\times p\times q\times q\times r\times r$
$49p^{2}qr=7\times 7\times p\times p\times q\times r$
$\therefore GCF=7pqr$