Question

1. From the sum of 5y2 + 7yz, -5y2 – yz – z2 and 4yz + 3z2, subtract the sum of 5y2 – 3z2 and 8y2 + yz – 6z2.

Answer 1

Answer:

13y^2 - 9yz - 11z^2

Step-by-step explanation:

(5y^2 - 3z^2 + 8y^2 + yz - 6z^2) - (5y^2 + 7yz + (-5y^2) + (-yz ) + (-z^2) + 4yz + 3z^2)

13y^2 + yz -9z^2 - (10yz +2z^2)

13y^2 + yz - 9z^2 - 10yz - 2z^2

13y^2 - 9yz - 11z^2

I hope this will help you ☺️