Question

How do you simplify `(x^2 + 1)- (3x^2 - 4x + 3)`?

Answer 1

`=-2x^2 +4x -2`

Explanation:

`(x^2 + 1)- (3x^2 - 4x + 3)" "larr` remove brackets. Watch signs!

`=x^2 + 1-3x^2 + 4x - 3" "larr` collect like terms.

`=x^2-3x^2+4x+1-3`

`=-2x^2 +4x -2`