(3x - 1)² - (3x – 2) (3x + 1)
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Step-by-step explanation:
topic cf
x-4 x-5 x-6
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Answer:
=>by the formula (a - b) ^2 =a^2 + b^2 - 2ab
=> 9x^2 + 1 - 6x - [ 9x^2 + 3x - 6x - 2]
=> 9x^2 + 1 - 6x - 9x^2 - 3x + 6x + 2
=> 3 - 3x
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