Question

from the sum of 7y²+3yz+2,-5y²-yz-z² and 4y²+3z²,subtract the sum of 5y²-3z² and 8y²+yz-6z²​

Answer 1

Answer:

-7y^2 + yz + 9z^2 + 2

Step-by-step explanation:

Adding the first set

7y^2 + 3yz + 2

-5y^2 -yz -z^2

4y^2 +z^2

___________________

6y^2 +2yz +2 ………………(i)

Adding the second set

8y^2 + yz -6z^2

5y^2 -3z^2

________________

13y^2 + yz - 9z^2 ……… (ii)

Subtracting the ii from i we get

6y^2 +2yz +2

13y^2 +yz +0 -9z^2

- - +

_____________________

-7y^2 +yz + 2 +9z^2