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

Responses

x2−2x+15
x squared minus 2 x plus 15

x2−8x+15
x squared minus 8 x plus 15

2x−2
2 x minus 2

3x2−4x2−3x−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 step by step.

Using the FOIL method:

  1. First: Multiply the first terms: \(x \cdot x = x^2\)
  2. Outside: Multiply the outside terms: \(x \cdot (-3) = -3x\)
  3. Inside: Multiply the inside terms: \(-5 \cdot x = -5x\)
  4. Last: Multiply the last terms: \(-5 \cdot (-3) = 15\)

Now combine all these results:

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

Combine the like terms:

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

So, the expression \((x-5)(x-3)\) simplifies to \(x^2 - 8x + 15\).

Now let's compare this with the provided responses:

  • \(x^2 - 2x + 15\) (not equivalent)
  • \(x^2 - 8x + 15\) (this matches)
  • \(2x - 2\) (not equivalent)
  • \(3x^2 - 4x^2 - 3x - 15\) (this does not simplify to the correct form)

Thus, the correct answer is:

\(x^2 - 8x + 15\).