Question

Express the following as an algebraic expression:​
(iv)The product of $12,x$, $y$ and $z$ minus the product of $5,m$ and $n$.

Answer 1

Product of $12,x,y$ and $z=12\times x\times y\times z$
$=12xyz$ ...(i)
Product of $5,m$ and $n=5\times m\times n$
$=5mn$ ....(ii)
Subtracting (ii) from (i)
$\therefore 12xyz-5mn$
Hence, the required expression is $12xyz-5mn$.