A = (4x − 3)² – (4x − 3)(2x + 1)
= (4x - 3)(4x - 3) - (4x - 3)(2x + 1)
= (4x-3)[(4x - 3) - (2x + 1)]
= (4x - 3)(2x - 2)
= 2(4x - 3)(x - 1)
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A = (4x − 3)² – (4x − 3)(2x + 1)
= (4x - 3)(4x - 3) - (4x - 3)(2x + 1)
= (4x-3)[(4x - 3) - (2x + 1)]
= (4x - 3)(2x - 2)
= 2(4x - 3)(x - 1)