Answer :

Answer:

-12x^2 -25x +13

Step-by-step explanation:

Chelboy

Answer:13-25x-12x^2

Step-by-step explanation:

(3-13x-7x^2)-(5x^2+12x-10)

Clearing brackets

3-13x-7x^2-5x^2-12x+10

Collect like terms

3+10-13x-12x-7x^2-5x^2

13-25x-12x^2

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