Question

Add 5x²+6z² and -9x²+2z²+9y​

Answer 1

Answer:

-4x² + 8x² + 9y

Step-by-step explanation:

5x²+6z² and -9x²+2z²+9y​

= 5x²+6z² -9x²+2z²+9y

= 5x² - 9x² + 6z² + 2z² + 9y

= -4x² + 8x² + 9y

Hope it helps you

Thanks

Answer 2

Answer:

-4x² is your answer mate