Réponse:
Bonsoir
3^3=27
1.
(-4)^2=16
3×(-4)=-12
16-12+4=8
2.
1/3+1/4=1×4/3×4+1×3/4×3=4/12+3/12=7/12
3.
1,5×10^9=1500000000
4.
(x-2)×(x+2)
x(au carré)+2x-2x-4
x(au carré)-4
5.
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Réponse:
Bonsoir
3^3=27
1.
(-4)^2=16
3×(-4)=-12
16-12+4=8
2.
1/3+1/4=1×4/3×4+1×3/4×3=4/12+3/12=7/12
3.
1,5×10^9=1500000000
4.
(x-2)×(x+2)
x(au carré)+2x-2x-4
x(au carré)-4
5.