1. **State the problem:** We are given the equation \((x + 2)(x - 5) = x^2 - 2x - 15\) and need to verify if both sides are equal by expanding and simplifying.
2. **Recall the formula:** To expand the product of two binomials, use the distributive property (FOIL method):
$$ (a + b)(c + d) = ac + ad + bc + bd $$
3. **Expand the left side:**
$$ (x + 2)(x - 5) = x \cdot x + x \cdot (-5) + 2 \cdot x + 2 \cdot (-5) = x^2 - 5x + 2x - 10 $$
4. **Simplify the left side:**
$$ x^2 - 5x + 2x - 10 = x^2 - 3x - 10 $$
5. **Compare with the right side:** The right side is given as:
$$ x^2 - 2x - 15 $$
6. **Conclusion:** Since
$$ x^2 - 3x - 10 \neq x^2 - 2x - 15 $$
the original equation is not true as stated. The left side simplifies to \(x^2 - 3x - 10\), which is different from the right side \(x^2 - 2x - 15\).
**Final answer:** The equation \((x + 2)(x - 5) = x^2 - 2x - 15\) is false because the expanded left side is \(x^2 - 3x - 10\), not \(x^2 - 2x - 15\).
Expand Binomial E8C0A4
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