Math, asked by ItzLazyGirlThan, 11 months ago

Please answer fast guys I'm curious to know the answer​

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Answers

Answered by varshavarsha88406
1

Answer:option C

Step-by-step explanation:

Answered by naavyya
1

Answer:

Option C  :   -5x + 16y + 6z - 8z²

Step-by-step explanation:

9x - 4y + 6z² + (-5x - 4y - z²)

= 9x - 4y + 6z² - 5x - 4y - z²

Re-arranging,

= 9x - 5x - 4y - 4y + 6z² - z²

= 4x - 8y + 5z²   ...   (i)

6z + 9y - 2z² + (- x - y - z²)

= 6z + 9y - 2z²  - x - y - z²

Re-arranging,

= 6z - x + 9y - y - 2z² - z²

= 6z - x + 8y - 3z²   ...   (ii)

(ii) - (i)

6z - x + 8y - 3z²  - (4x - 8y + 5z²)

= 6z - x + 8y - 3z²  - 4x + 8y - 5z²

Re-arranging,

= 6z - x - 4x + 8y + 8y - 3z² -5z²

= 6z - 5x + 16y - 8z²

Re-arranging,

= -5x + 16y + 6z - 8z²

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