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What is the product mentally of (ab + 3)(ab - 3)
4 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