1.

( -12x^4+8-3x )+( 13x^3+14x-9x^4 )

Answer»

ANSWER:

(-12x^4+8-3x)+(13x^3+14x-9x^4)

(-48×+8-3x)+(39x+14x-36x)

-51x+8+39x+14x-36x

-87x+53x+8

-34x+8

34x-8x=34/8



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