Question

 (2x² + z²) ,( -3x² - z² ), (x² + z²) add​

Answer 1

Answer:

= z²

Step-by-step explanation:

= (2x² + z²) +( -3x² - z² )+ (x² + z²)

= 2x² + z² - 3x² - z² + x² + z²

= 2x²+ x² - 3x² + z² - z² + z²

= 3x² - 3x² + z²

= z²

Answer 2

Answer:

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