Question

pls can u explain thiss ?? ʕ´•ᴥ•`ʔ​

Answer 1

Answer:

(7x²+5xy-3y²-9) - (-2x²+3xy+7y²-4)

=>7x²+5xy-3y²-9 +2x²-3xy+7y²-4

=> 9x²+2xy+4y²-13 answer

Answer 2

Answer:

First, adding

3x^2 +5xy+7y^2 +3 and 2x^2 −4xy−3y^2 +7,

we have

= 3x^2+5xy+7y^2 +3+2x^2 −4xy−3y^2 +7

= 5x^2+xy+4y ^2 +10

Now, Subtracting

5x^2 +xy+4y^2+10 from 9x^2 −8xy+11y^2

= (9x^2 −8xy+11y^2 )−(5x^2 +xy+4y^2 +10)

= 9x^2 −8xy+11y^2 −5x ^2 −xy−4y^2 −10

= 4x^2 −9xy+7y^2 −10

Step-by-step explanation:

Hope it helps :)

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