Question

Please help me simplify the expression

Answer 1

`-21s^3`

Explanation:

multiply the coefficients of the two expressions to get a coefficient of -21

then multiply the variables, adding the exponents (2 and 1) and using 3 as the exponent of the result

Answer 2

`-21s^(3)`

Explanation:

`-3s^(2) * 7s`

`-21s^(2+1)`

`-21s^(3)`