Question

what must be added to
$3x {}^{3} - 2x {}^{2} + 5x + 1$
so that the sum may be
$x { }^{3} - 2x {}^{2} + 4x - 1$
?
​

Answer 1

Step-by-step explanation:

3x³-2x²+5x+1

1x³-2x²+4x-1

(-) (+) (-) (+)

__________

2x³-0+x+2