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alexia99
@alexia99
June 2021
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aidez moi svp j'ai un devoir ou je bloque sur une question.
j'aimerai bien avoir votre aide merci
((2x²+3)²-(5x+9)²)²
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droopette
((2x
²+3)²-(5x+
9)²)²
=
((2x
²+3)²-(5x+9)²)((2x
²+3)²-(5x+
9)²)
=[(2x²+3-5x-9)(2x²+3+5x+9)]
[(2x²+3-5x-9)(2x²+3+5x+9)]
=(2x²-5x-6)(2x²+5x+12)(2x²-5x-6)(2x²+5x+12)
=(2x²-5x-6)²(2x²+5x+12)²
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=((2x²+3)²-(5x+9)²)((2x²+3)²-(5x+9)²)
=[(2x²+3-5x-9)(2x²+3+5x+9)][(2x²+3-5x-9)(2x²+3+5x+9)]
=(2x²-5x-6)(2x²+5x+12)(2x²-5x-6)(2x²+5x+12)
=(2x²-5x-6)²(2x²+5x+12)²