Bonjour 1)developper et reduire les expression suivant
K=(x+9)^2 L=(-3x-2/5)^2
R=(2x+7/3)(2x-7/3)
T=(x^2-3x+2)
2)factoriser
18x-24 ; 7x^2+21x
x(x+2)-3/4(x+2)
x^2+14x+49 ; x^2 -18/7x+64/49 ; 1-25/9x^2​
merci d'avance
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