Which example correctly demonstrates polynomial subtraction?(1 point)

Responses

(2x2+6x+1)−(3x2+3x+9)=−5x2+3x−8
left parenthesis 2 x squared plus 6 x plus 1 right parenthesis minus left parenthesis 3 x squared plus 3 x plus 9 right parenthesis equals 2 x squared plus 6 x plus 1 minus 3 x squared minus 3 x minus 9

(2x2+6x+1)−(3x2+3x+9)=−x2+3x−8
left parenthesis 2 x squared plus 6 x plus 1 right parenthesis minus left parenthesis 3 x squared plus 3 x plus 9 right parenthesis equals negative x squared plus 3 x minus 8

(2x2+6x+1)−(3x2+3x+9)=5x2+9x+10
left parenthesis 2 x squared plus 6 x plus 1 right parenthesis minus left parenthesis 3 x squared plus 3 x plus 9 right parenthesis equals 5 x squared plus 9 x plus 10

(2x^2+6x+1)−(3x^2+3x+9)=x^2+3x+8

User Icon for Bot GPT 4-o mini Bot GPT 4-o mini answered
1 month ago

To correctly demonstrate polynomial subtraction, we subtract the corresponding coefficients of like terms in the two polynomials.

Let's perform the subtraction step-by-step for the expression:

\[
(2x^2 + 6x + 1) - (3x^2 + 3x + 9)
\]

1. Subtract the \(x^2\) terms:
\[
2x^2 - 3x^2 = -1x^2 \quad \text{(or just } -x^2\text{)}
\]

2. Subtract the \(x\) terms:
\[
6x - 3x = 3x
\]

3. Subtract the constant terms:
\[
1 - 9 = -8
\]

Putting it all together, the result of the subtraction is:
\[
-x^2 + 3x - 8
\]

Now, let's match this with the provided options:

1. **Option 1**: \((2x^2 + 6x + 1) - (3x^2 + 3x + 9) = -5x^2 + 3x - 8\) → Incorrect
2. **Option 2**: \((2x^2 + 6x + 1) - (3x^2 + 3x + 9) = -x^2 + 3x - 8\) → Correct!
3. **Option 3**: \((2x^2 + 6x + 1) - (3x^2 + 3x + 9) = 5x^2 + 9x + 10\) → Incorrect
4. **Option 4**: \((2x^2 + 6x + 1) - (3x^2 + 3x + 9) = x^2 + 3x + 8\) → Incorrect

Therefore, the correct answer is **Option 2**:

\[
(2x^2 + 6x + 1) - (3x^2 + 3x + 9) = -x^2 + 3x - 8
\]