Use the Distributive Property to verify which expression is equivalent to (x−5)(x−3).(1 point)

Responses

3x2−4x2−3x−15
3 x squared minus 4 x squared minus 3 x minus 15

x2−2x+15
x squared minus 2 x plus 15

2x−2
2 x minus 2

x2−8x+15

1 answer

To verify which expression is equivalent to \((x - 5)(x - 3)\) using the Distributive Property (also known as the FOIL method for binomials), we can expand the expression as follows:

\[ (x - 5)(x - 3) = x \cdot x + x \cdot (-3) + (-5) \cdot x + (-5) \cdot (-3) \]

Calculating each term:

  1. \(x \cdot x = x^2\)
  2. \(x \cdot (-3) = -3x\)
  3. \((-5) \cdot x = -5x\)
  4. \((-5) \cdot (-3) = 15\)

Now combine these results:

\[ x^2 - 3x - 5x + 15 = x^2 - 8x + 15 \]

Thus, the expression \((x - 5)(x - 3)\) simplifies to:

\[ x^2 - 8x + 15 \]

Now, comparing with the options given:

  • \(3x^2 - 4x^2 - 3x - 15\) does not match.
  • \(x^2 - 2x + 15\) does not match.
  • \(2x - 2\) does not match.
  • \(x^2 - 8x + 15\) matches.

Therefore, the expression equivalent to \((x - 5)(x - 3)\) is:

\[ \boxed{x^2 - 8x + 15} \]