Question

How do you multiply `4x ^ { - 3} y ^ { 2} \cdot 2x ^ { - 2} y ^ { - 1}`?

Answer 1

`8x^-5y`

Explanation:

Step 1) Combine like terms:

`(4*2)(x^-3 * x^-2)(y^2*y^-1) =>`

Step 2) Multiple using rules for exponents:

`8x^-5y^1 => 8x^-5y`