Question

Multiply $\left(3x^3\right)\times \left(6x^{2}y\right)\times \left(2x^{2}y{z}^3\right)$.

• A. $18x^6{y}^3{z}^3$
• B. $36x^7{y}^2{z}^3$
• C. $36x^6{y}^3{z}^3$
• D. $18x^7{y}^2{z}^3$

Answer 1

The correct option is B $36x^7{y}^2{z}^3$

$=\left(3x^3\right)\times \left(6x^{2}y\right)\times \left(2x^{2}y{z}^3\right)$
$=3\times 6\times 2\times x^3\times x^2\times x^2\times y\times y\times z^3$
$=36x^7{y}^2{z}^3$.