Question

Factor the expression completely.

18x2 - 8
A. 2(3x - 2)(3x - 2)
B. 2(3x + 4)(3x - 1)
C. 2(9x2 - 4)
D. 2(3x + 2)(3x - 2)

Answer 1

18x² - 8

Common factor is 2.

=》18x² - 8

=》2 (9x²- 4) [option C].

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Answer 2

Explanation:

18x²-8

= 2(9x²-4)

= 2(3x+2)(3x-2)