1)) Use algebra tiles to find $$ \left(-7 x^{2}-5 x\right)+\left(-2 x^{2}-9 x+7\right) $$

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UpStudy AI · Accepted Answer

To add the polynomials $$-7x^{2} - 5x$$ and $$-2x^{2} - 9x + 7$$ using algebra tiles, follow these steps:

1. **Identify Like Terms:**
   - **Quadratic terms ($$x^2$$):**
     - $$-7x^{2}$$ and $$-2x^{2}$$
   - **Linear terms ($$x$$):**
     - $$-5x$$ and $$-9x$$
   - **Constant term:**
     - $$+7$$

2. **Combine Like Terms:**
   - **Quadratic Terms:**
     $$
     -7x^{2} + (-2x^{2}) = -9x^{2}
     $$
   - **Linear Terms:**
     $$
     -5x + (-9x) = -14x
     $$
   - **Constant Term:**
     $$
     +7
     $$

3. **Write the Final Expression:**
   $$
   -9x^{2} - 14x + 7
   $$

**Final Answer:**  
$$-9x^{2} - 14x + 7$$
$$-9x^{2} - 14x + 7$$

1)) Use algebra tiles to find

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