iayannamitchell iayannamitchell

06-03-2020
Mathematics

contestada

What is a difference of squares with a factor of (3x + 7) ?

Respuesta :

jimrgrant1 jimrgrant1

06-03-2020

Answer:

9x² - 49

Step-by-step explanation:

A difference of squares factors in general as

a² - b² = (a + b)(a - b)

Given (3x + 7) with a = 3x and b = 7

Then the other factor is (3x - 7)

(3x + 7)(3x - 7)

= (3x)² - 7²

= 9x² - 49

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