Question

2y²+ yz - 2z² from 9y² - 3z² take away ​

Answer 1

Answer:

$7 {y}^{2} - yz - {z}^{2}$

Step-by-step explanation:

$(9 {y}^{2} - 3 {z}^{2} ) - (2 {y}^{2} + yz - 2 {z}^{2} ) \\ 9 {y}^{2} - 3 {z}^{2} - 2 {y}^{2} - yz + 2 {z}^{2} \\ 7 {y}^{2} - yz - {z}^{2}$

Answer 2

Answer:-

9y² - 3z²

2y² - 2z² + yz

(-) (+) (-)

7y² - z² - yz

Answer:- 7y² - z² - yz

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