PLEASE HELP ME !!! the expression 49x² - 36 is equivalent to : (A) (7x - 6 )² (B) (7x - 6 ) ( 7x + 6) (C) (24.5x - 18 )² (D) (24.5x - 18) (24.5x + 18 )

Question

asked Aug 7, 2021 176k views

2 Answers

Danielpunkass · Answer 1 · 2021-08-12T03:45:54+0000

Answer:

(B) (7x - 6 ) ( 7x + 6)

Explanation:

49x^2 - 36

This is the difference of squares

(7x)^2 - 6^2

We can factor this as

(a^2 -b^2) =(a-b) (a+b)

(7x)^2 - 6^2 = (7x-6) (7x+6)