(2 x- 3)² - 8 x + 12 factorize it
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4x²+9-12x-8x+12
4x²-20x+21
4x²-14x-6x+21
2x(2x-7)-3(2x-7)
(2x-3)(2x-7)=0
2x-3=0 or 2x-7=0
x=3/2 or x=7/2
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(2 x- 3)² - 8 x + 12
= 4x² + 9 - 12x - 8x + 12
= 4x² - 20x + 21
= 4x² - 14x - 6x + 21
= 2x ( 2x - 7 ) -3 ( 2x - 7 )
= ( 2x - 3 )( 2x - 7 )
⇒ x =3/2 and x = 7/2
= 4x² + 9 - 12x - 8x + 12
= 4x² - 20x + 21
= 4x² - 14x - 6x + 21
= 2x ( 2x - 7 ) -3 ( 2x - 7 )
= ( 2x - 3 )( 2x - 7 )
⇒ x =3/2 and x = 7/2
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