Question

Subtract ; please give the answer of 3,4,5 please​

Answer 1

Answer:

3)2a+10b

4)5-3a+9b-7c

5)3x2-7xy-4y2

Step-by-step explanation:

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Answer 2

iii. 2a + 10b

iv. 9b -7c - 3a +5

v. 3x² - 7xy -4y²

Step-by-step explanation:

iii. 2a - 3b from 4a + 7b

=> 4a + 7b - (2a - 3b)

Open the brackets,

=> 4a + 7b - 2a +3b

Bring Like Terms Together

=> 4a - 2a + 7b + 3b

=> 2a + 10b Ans

iv. 3a - 2b + 4c from 5 + 7b - 3c

=> 5 + 7b - 3c - (3a - 2b + 4c)

Open The Brackets,

=> 5 + 7b - 3c - 3a + 2b - 4c

Bring the like terms together

=> 7b + 2b - 3c - 4c - 3a + 5

=> 9b -7c - 3a +5 Ans

v. 2x² + 5xy + y² from 5x² - 2xy - 3y²

=> 5x² - 2xy - 3y² - (2x² + 5xy + y²)

Open The Brackets,

=> 5x² - 2xy - 3y² - 2x² - 5xy - y²

Bring The Like Terms Together,

=> 5x² - 2x² - 2xy - 5xy - 3y² -y²

=> 3x² - 7xy -4y² Ans

Hope it helps!!!