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oce2311
@oce2311
June 2021
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developper (2x+5)^2-9x^2
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Aftershock
Je développe :
(2x+5)²-9x²
= 4x²+20x+25-9x²
=
-5x²+20x+25
1 votes
Thanks 1
SOS48
(2x+5)^2-9x^2
=4x^2+2*4x^*5+25-9x^2
= -5x^2+40x+25
0 votes
Thanks 0
SOS48
dsl c 20x à la fin
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(2x+5)²-9x²
= 4x²+20x+25-9x²
= -5x²+20x+25
=4x^2+2*4x^*5+25-9x^2
= -5x^2+40x+25