84.3k views
9 votes
Pls with step.

plsss​.

is anyone solving this?



pls help

Pls with step. plsss​. is anyone solving this? pls help-example-1

1 Answer

7 votes

Answer:

Explanation:

12ab - 10b² - 18a² + 9ab + 12b² + 14a²

= 12ab + 9ab - 10b² + 12b² -18a² + 14a² {Combine like terms}

= (12 + 9)ab + (-10 + 12)b² + (-18 + 14)a²

= 21ab + 2b² - 4a²

ab + 2b² + 3b² - a² = ab + (2+3)b² - a²

= ab + 5b² - a²

Now find the difference

ab + 5b² - a² - [ 21ab + 2b² - 4a²]

= ab + 5b² -a² - 21ab - 2b² + 4a²

= ab - 21ab + 5b² - 2b² - a² + 4a²

= -20ab + 3b² + 3a²

2) 2x³ – 3x² y +2xy²+3y³ - unknown polynomial = x³ -2x² y+3xy²+4y³

2x³ – 3x² y +2xy²+3y³ = x³ -2x² y+3xy²+4y³ + unknown polynomial

2x³ – 3x² y +2xy²+3y³ - [ x³ -2x² y+3xy²+4y³] = unknown polynomial

2x³ – 3x² y +2xy²+3y³ - x³ + 2x² y- 3xy²- 4y³ =

2x³ - x³ -3x²y +2x²y + 2xy² - 3xy² + 3y³ - 4y³=

x³ - x²y - xy² - y³

Answer: x³ - x²y - xy² - y³

User Cubarco
by
6.6k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.