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Factor the expression below.

36x² - 49
A. (6x + 7)(6x - 7)
B. (4x-7)(9x - 7)
C. (4x+7) (9x-7)
D. (6x-7)(6x-7)

User Araqnid
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1 Answer

11 votes

Answer:

A. (6x + 7)(6x - 7)

Explanation:

use difference of squares, which says a^2 - b^2 =(a+b)(a-b)

take the square roots of the two numbers, 6x and 7, and use them as a and b

User Waheed
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