Question

subtracting 3x2 4x – 5 from 7x2 x 9 results in a polynomial. after subtracting 4x2 – 3x from this polynomial, the difference is

Answer 1

7x^2 + x + 9 - [3x^2 +4x -5] = 4x^2 -3x +14

4x^2 - 3x + 14 - [4x^2 - 3x] = 14

The difference is 14

Answer 2

the difference is 14

Explanation:

subtracting 3x2 4x – 5 from 7x2 x 9 results in a polynomial

Subtract
`3x^2+4x-5 from 7x^2+x+9`

`7x^2+x+9-(3x^2+4x-5)`

Multiply negative inside the parenthesis

`7x^2+x+9-3x^2-4x+5`

`4x^2-3x+14`

Now we subtract 4x^2 -3x from the result
`4x^2-3x+14`

`4x^2-3x+14-(4x^2-3x)`

`4x^2-3x+14-4x^2+3x)`

14