Question

I want answer of this question give me right answer

Answer 1

Let A be the term to be added to convert

x³ + 2x³ - 9

into

x³ - 3x² + 4

x³ + 2x³ - 9 + A = x³ - 3x² + 4

A = x³ - 3x² + 4 - x³ - 2x³ + 9

A = -2x³ - 3x² + 13

Hence, -2x³ - 3x² + 13 needs to be added

Answer 2

Answer:

let b be tem

then x3+2x square-9 +A=x3-3x square+42

A=x3-x3+(-3x-2x)square+ 51

=-5xsquare+51