4. Which of the following are the factors of 81x2 - 4?
a. (9x +2)(9x - 2)
b. (3x + 2)(3x - 2)
C. (3x + 2)(9x2 - 6x +4)
d. ( 3x - 2 )( 9x2 + 6x + 4)
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4. Which of the following are the factors of 81x2 - 4?
a. (9x +2)(9x - 2)
b. (3x + 2)(3x - 2)
C. (3x + 2)(9x2 - 6x +4)
d. ( 3x - 2 )( 9x2 + 6x + 4)
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Verified answer
Answer:
81x²-4
(9x+2)(9x-2)
Step-by-step explanation:
yan po ang sagot 9x times 9x = 81x²
ang iba is mali na po kasi 3x times 9x² = 27x³