Question

Match the following.

• A. $y^3$
• B. $4x$
• C. $20$
• D. $xy$

Answer 1

If two unknowns or one unknown and one known are written next to each other without any addition, subtraction, or division operation then there is a multiplication arithmetic operation between them.
$4\times x=4x$
$x\times y=xy$
While if two known numbers are multiplied when they are first put in brackets then are written next to each other.
$4\times 5=\left(4\right)\left(5\right)=20$
If unknown or known numbers are multiplied by itself $n$ times, then the product is equal to the number to the $n^{th}$ power.
$y\times y\times y=y^3$