Exercice 1,2,3,4 et 5. S'il vous plait... Merci ;)
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dohai1
N1: a) 4t-3=4*(-2)-3=-8-3=-11 b) 10-2t=10-2*(-2)=10+8=18 c) t(3+2t)=(-2)(3+2*(-2)=(-2)(3-4)=-2*-1=2 d) -5t+6=-5*(-2)+6=10+6=16 N:2 a) 7xy=7*-2*4=-56 b) 7x+4y=7*-2+4*4=-14+16=2 c( 7x+7y=7*-2+7*4=-14+28=14 d) x²+y²=(-2)²+(4)²=4+16=20 e) x²+3y=(-2)²+3*4=4*12=16 f) 3x²-2y=3*(-2)²+2*4=12+8=20
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a) 4t-3=4*(-2)-3=-8-3=-11
b) 10-2t=10-2*(-2)=10+8=18
c) t(3+2t)=(-2)(3+2*(-2)=(-2)(3-4)=-2*-1=2
d) -5t+6=-5*(-2)+6=10+6=16
N:2
a) 7xy=7*-2*4=-56
b) 7x+4y=7*-2+4*4=-14+16=2
c( 7x+7y=7*-2+7*4=-14+28=14
d) x²+y²=(-2)²+(4)²=4+16=20
e) x²+3y=(-2)²+3*4=4*12=16
f) 3x²-2y=3*(-2)²+2*4=12+8=20
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