factorize ( 2x + 1 )^2 - 9 ( 2x + 1 ) + 20
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I hope you are clear now
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Answer:
x = -1 and -12/4
Step-by-step explanation:
4x^2 + 2x + 1 - 18x - 9 + 20
4x^2 - 16x + 12
by middle term splitting
4x^2 + 4x + 12x + 12
4x ( x + 1 ) + 12 ( x + 1)
( x + 1 ) ( 4x + 12)
So, x = -1 and -12/4
Hope it will help you
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