Question

what should be subtracted from x³-1 to get 2x³-2y+1?​

Answer 1

x³-2y+2

Step-by-step explanation:

$2x {}^{ 3} - 2y + 1 - (x {}^{3} - 1)$

$2x {}^{3} - 2y + 1 - x {}^{3} + 1$

$2x {}^{3} - x {}^{3} - 2y + 1 + 1$

$= \: \: \: \: x {}^{3} - 2y + 2$

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