Bonjour,
Rappels: •(a+b)(c+d)=ac+ad+bc+bd
•a(b+c)=ab+ac
A=(5t-6t)(4+6t)
A=20t+30t²-24t-36t²
A=-6t²-4t
B=-2y(5-y)
B=-10y+2y²
B=2y²-10y
C=(z+4)(z+3)
C=z²+3z+4z+12
C=z²+7z+12
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Bonjour,
Rappels: •(a+b)(c+d)=ac+ad+bc+bd
•a(b+c)=ab+ac
A=(5t-6t)(4+6t)
A=20t+30t²-24t-36t²
A=-6t²-4t
B=-2y(5-y)
B=-10y+2y²
B=2y²-10y
C=(z+4)(z+3)
C=z²+3z+4z+12
C=z²+7z+12