Question

What must be subtracted from $4x^3-3x+5$ to get $2x^2-3x^3+5x-2$?

• A. - - 8x + 7
  
• B. + - 8x + 7
  
• C. - - 8x + 3
  
• D. - - 8x + 7
  

Answer 1

The correct option is D

- - 8x + 7

To get the required algebraic expression we will subtract $2x^2-3x^3+5x-2$ from $4x^3-3x+5$.

$4x^3-3x+5$
$-3x^3+5x-2+2x^2$
$+-+-$
________________________
$7x^3-8x+7-2x^2$

So, the required algebraic expression is $7x^3-2x^2-8x+7$.