Which of the following correctly simplifies (9x2+17x+13)−(2x2+12x+11)

?(1 point)
Responses

7x2+5x+2
7 x squared plus 5 x plus 2

12x2+2
12 x squared plus 2

7x2+29x+24
7 x squared plus 29 x plus 24

9x2+17x+13−2x2−12x−11

1 answer

To simplify \((9x^2 + 17x + 13) - (2x^2 + 12x + 11)\), you first need to distribute the negative sign across the second polynomial:

  1. Rewrite the expression: \[ 9x^2 + 17x + 13 - 2x^2 - 12x - 11 \]

  2. Combine like terms:

    • For \(x^2\) terms: \(9x^2 - 2x^2 = 7x^2\)
    • For \(x\) terms: \(17x - 12x = 5x\)
    • For constant terms: \(13 - 11 = 2\)

Putting it all together, the simplified expression is: \[ 7x^2 + 5x + 2 \]

Therefore, the correct response is: 7x² + 5x + 2.