Question

11. How much is 3x2 + 4y2 - 4xy smaller than 5x2 +
+ y2 - 6xy?
12. What should be added to 4x2 – 3xy + 7 to get 6x2 - 2xy - 8?
13. What should be subtracted from 3abc - a2 +5b2 to get 8abc + 3a- 2b2?​

Answer 1

Answer:

5x2 +  y2 - 6xy

-3x2 + 4y2 - 4xy

_____________

5x2 + y2 - 6xy

-3x2 -4y2 + 4xy

_____________

2x2 - 3y2 - 2xy

12. 4 + xy - 15

13. -5abc + 7b^2 - a^2 + 3a

Step-by-step explanation:

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Answer 2

Answer:

11) 4-3y^2-2xy

12) 4+xy-15

13)-5abc+7b^2-a^2+3a