Question

use formula to multiply (a-7)(a+7)​

Answer 1

Step-by-step explanation:

$(a - 7)(a + 7) = a {}^{2} - 49$

Answer 2

Answer:

using this formula we will get the answer a²—b² = ( a - b ) ( a + b )

Step-by-step explanation:

we know that ( a - b ) ( a + b ) = a²—b²

= a²— 7²

= a²— 49

Hope it is clear :)