Question

what must be subracted from 3x power 3 -5x power 2 -x+2 to get 4x power 3+ 3x-5
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Answer 1

Answer:

$\huge{\fbox{\fbox{\orange{\mathfrak{Answer\::-}}}}}$ x³-5x²-4x+7

Step-by-step explanation:

:Let the number be n

[3x³-5x²-x+2]-n=4x³+3x-5

[3x³-5x²-x+2]-[4x³+3x-5]=n

[3x³-5x²-x+2]-4x³-3x+5=n

3x³-4x³-5x²-x-3x+2+5=n

x³-5x²-4x+7=n

n =x³-5x²-4x+7

Answer 2

Let expression Q be subtracted from 3x³-5x²-x+2 to get 4x³+3x-5

∴ 3x³-5x²-x+2-Q=4x³+3x-5

3x³-5x²-x+2-4x³-3x+5=Q

-x³-5x²-4x+7=Q

Q= -x³-5x²-4x+7