Question

please answer this i will mark as brainlist​

Answer 1

Answer:

Q.04

Ans. x ^ 2 + 2xy - y ^ 2

Step-by-step explanation:

First we have to number the equation :

Therefore,

x ^ 2 + xy + y ^ 2 -------- (1)

2x ^ 2 + 3xy ------------- (2)

And then Subtract the equation (1) from (2)

_ 2x ^ 2 + 3xy

x ^ 2 + xy + y ^ 2

__________________

x ^ 2 + 2xy - y ^ 2

Therefore Answer is. x ^ 2 + 2xy - y ^ 2

Answer 2

Answer:

Step-by-step explanation:

1.`12m^2 - 9m + 5m- 4m^2 -7m + 10`

`= 12m^2 - 4m^2 - 9m+ 5m - 7m + 10`

`= m^2[12-4] + m[-9+5-7] + 10`

`= 8m^2-11m+ 10`

2.(30ab+12b+14a)−(24ab−10b−18a)

⇒(30−24)ab+(12+10)b+(14+18)a

6ab+22b+32a

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