Question

What should be subtracted from 7x³-11x+5x-9 to get 3x³+15x+7?


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Answer 1

Answer:

   7׳ - 11× + 5x - 9

-    (4׳ -21× - 16)

= 3׳ + 15x + 7

so the answer id 4x³ - 21x - 16

Step-by-step explanation:

Answer 2

ANSWER :

4x³-11x²-10x-16

                   

Step-by-step explanation:

7x³-11x²+5x-9 -( 3x³+15x+7)  =  7x³-11x²+5x-9 - 3x³-15x-7

                                               =7x³-3x³-11x²+5x-15x -9-7

                                               =4x³-11x²-10x-16

ANS:4x³-11x²-10x-16