Bonjour,
a=
4-6x² -10x
b=
-12x *9x =-108x²
c=
9x² +54x +81
d=
28x² -42x -32x +48 +10=
28x² - 74x +58
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Bonjour,
a=
4-6x² -10x
b=
-12x *9x =-108x²
c=
9x² +54x +81
d=
28x² -42x -32x +48 +10=
28x² - 74x +58