+1090 You simplify an expression by combining all like terms.
For example, given the expression 3x^2 - 2 + 5x + 3 - x^2 + 2x + 13,
you could first combine all the constant terms:
3x^2 - 2 + 5x + 3 - x^2 + 2x + 13
3x^2 + 5x - x^2 + 2x - 2 + 3 + 13
3x^2 + 5x - x^2 + 2x + 14
Then you could combine the x terms:
3x^2 + 5x - x^2 + 2x + 14
3x^2 - x^2 + 5x + 2x + 14
3x^2 - x^2 + 7x + 14
And finally the x^2 terms:
3x^2 - x^2 + 7x + 14
2x^2 + 7x + 14
2x^2 + 7x + 14 is the simplified expression of 3x^2 - 2 + 5x + 3 - x^2 + 2x + 13.
