Factor this equation , I can’t comprehend it
2 answers:
Answer:
B) (2x + 3)(2x - 3)
Step-by-step explanation:
Use the FOIL method for each answer choice.
FOIL = First, Outside, Inside, Last
(2x)(2x) = 4x²
(2x)(-3) = -6x
(3)(2x) = 6x
(3)(-3) = -9
4x² -6x +6x -9
Simplify. Combine like terms:
4x² (-6x + 6x) - 9
4x² - 9
4x² - 9 = 4x² - 9 ∴ B) (2x + 3)(2x - 3) is your answer
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Answer:
B
Step-by-step explanation:
using the method of difference of 2 squares
• a² - b² = (a + b)(a - b)
For 4x² - 9
with 4x² = (2x)² ⇒ a = 2x
9 = 3² ⇒ b = 3
4x² - 9 = (2x + 3)(2x - 3) → B
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