Question

1) What should be taken away from 3x² - 4y² + 5xy + 20 to obtain - x²- y²+ 6xy + 20 ?
2) From the sum of 2y² + 3yz, - y²- yz - z² and yz + 2z², subtract the sum of 3y² - z²
and - y2 + yz + z²


Subject: Mathematics
Chapter: Algebraic Expression

Those who will solve this question correctly I will mark him or her with 5 stars and mark him the brainliest...But the answer should be correct and within 20 minutes ​

Answer 1

Answer:

1) 4x^2 - 3y^2 - xy

2) -y^2 + 2yz + z^2