MATH SOLVE

3 months ago

Q:
# what is the product mentally of (ab + 3)(ab - 3)

Accepted Solution

A:

Answer: ab² - 9Step-by-step explanation:Given in the question an expression(ab + 3)(ab - 3)To product mentally we will use polynomial identity called Difference of squaresa² - b² = (a+b)(a-b) here a = ab b = 3(ab + 3)(ab - 3) = ab² - 3² = ab² - 9