Question

(3x-1)^2-(3x-2)(3x+1)​

Answer 1

Answer:

--------

3x + 3

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Answer 2

Answer:

$(3x - 1) {}^{2} - (3x - 2)(3x + 1) \\( (3x) {}^{2} + 1 {}^{2} -6x)) - (9x {}^{2} + 3x - 6x - 2) \\ = ( 9x {}^{2} + 1 - 6x ) - (9x {}^{2} - 3x - 2) \\ = 9x {}^{2} + 1 - 6x - 9x {}^{2} + 3x + 2 \\ = - 3x + 3 \\ = 3 - 3x$