Question

4ху - 5yz + 7zx
- Зху - Зуz - 2zx​

Answer 1

Answer:

xy - 8yz + 5zx

hope this helps

Answer 2

Answer:

xy+9xz−2yz

Step-by-step explanation:

Distribute the Negative Sign:

=4xy−5yz+7zx+−1(3xy−3yz−2zx)

=4xy+−5yz+7zx+−1(3xy)+−1(−3yz)+−1(−2xz)

=4xy+−5yz+7zx+−3xy+3yz+2xz

=4xy+−5yz+7xz+−3xy+3yz+2xz

Combine Like Terms:

=4xy+−5yz+7xz+−3xy+3yz+2xz

=(4xy+−3xy)+(7xz+2xz)+(−5yz+3yz)

=xy+9xz+−2yz