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10 - ( 4x² - 4x. + 1 ) = 9 + 4x - 4x²
10 - (2x - 1)²
= 10 - 4x^2 + 4x - 1
= -4x^2 + 4x + 9
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Answers & Comments
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10 - ( 4x² - 4x. + 1 ) = 9 + 4x - 4x²
10 - (2x - 1)²
= 10 - 4x^2 + 4x - 1
= -4x^2 + 4x + 9