Math, asked by lazartagarena, 5 hours ago

5x² - 2y + 9 ; 3x² + 5y -7

Answers

Answered by mukherjeearitra871

2

Answer:

(5x² -2y + 9 ) + (3x² + 5y - 7)

= 5x² -2y + 9 + 3x² + 5y - 7

= 5x² + 3x² - 2y + 5y +9 - 7

= 8x² + 3y + 2

(5x² -2y + 9 ) - (3x² + 5y - 7)

= 5x² -2y + 9 - 3x² - 5y + 7

= 5x² - 3x² - 2y - 5y +9 + 7

= 2x² - 7y² + 16

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