Question

Subtract –7x- 9 from - 4x^2 + 3x - 5

Answer 1

`- 2(2 {x}^(2) - 5x - 2)`

Solution,

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

When there is a (-) in front of an expression in parentheses, change the sign of each term in the expression

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

Collect like terms

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

`- 4 {x}^(2) + 10x - 5 + 9`

Calculate the sum

`- 4 {x}^(2) + 10x + 4`

Factor out -2 from the expression

`- 2(2 {x}^(2) - 5x - 2)`

Hope this helps ...

Good luck on your assignment...

Answer 2

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

-4x-9-4x^2 - 5

-4x-14-4x^2

Answer: -2(2x+7+2x^2)