The product of (a − b)(a − b) is a^2 − b^2

Sometimes

Always

Never

Sometimes

Step-by-step explanation:

Expanding (a-b)(a-b), we get a^2 - 2ab - b^2. This is equal to a^2 - b^2 when a=0 and b=0.

the correct answer is you spend $55.78 more in a brand store that buy ing in a normal store.

step-by-step explanation:

brand = spend   $ 135.85 total

store = spend $80.07 total