Math, asked by rakshaybuzi, 26 days ago

Please solve these fast​

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Answers

Answered by saikrishnasahoo26
0

Answer:

a) 8a - 2ab + 2b - 15

b) 2xy - 7yz + 5zx + 10xyz

Step-by-step explanation:

a) (12a - 9ab + 5b - 3) - (4a - 7ab + 3b + 12)

⇒ 12a - 9ab + 5b - 3 - 4a + 7ab - 3b - 12

⇒ (12a - 4a) + (5b - 3b) + (-9ab + 7ab) + (-3 - 12)

⇒ 8a + 2b - 2ab - 15

b) (5xy - 2yz - 2zx + 10xyz) - (3xy + 5yz - 7zx)

⇒ 5xy - 2yz - 2zx + 10xyz - 3xy - 5yz + 7zx

⇒ (5xy - 3xy) + (-2yz - 5yz) + (-2zx + 7zx) + 10xyz

⇒ 2xy - 7yz + 5zx + 10yz

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