Question

Find $3x^{2}y\times 4x{y}^2\times 7x^3{y}^3$

Answer 1

$=3\times 4\times 7\times \left(x^{2}y\right)\times \left(x{y}^2\right)\times \left(x^3{y}^3\right)$
$=84\times x^2\times y\times x\times y^2\times x^3\times y^3$
$=84\times (x^2\times x\times x^3)\times (y\times y^2\times y^3)$
$=84\times x^6\times y^6=84x^6{y}^6$