How can 13 x 19 be rewritten using the

difference of two squares identity?
(1 point)
O (16 - 3) (16 + 3)
O (11 - 3) (11 + 3)
0 (10 + 3) (22 - 3)
0 (13 - 3) (19 + 3)

1 answer

To rewrite \(13 \times 19\) using the difference of two squares identity, we can express the multiplication in the form of \( (a - b)(a + b) \), where \( a \) is the average of the two numbers and \( b \) is the half of the difference between the two numbers.

First, let's find \(a\) and \(b\):

  1. Calculate \(a\): \[ a = \frac{13 + 19}{2} = \frac{32}{2} = 16 \]

  2. Calculate \(b\): \[ b = \frac{19 - 13}{2} = \frac{6}{2} = 3 \]

Now we can rewrite \(13 \times 19\) as: \[ (16 - 3)(16 + 3) \]

Thus, the answer is: \[ \boxed{(16 - 3)(16 + 3)} \]