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Sagot :

Réponse:

Bonsoir

3^3=27

1.

[tex]27[/tex]

(-4)^2=16

3×(-4)=-12

16-12+4=8

2.

[tex]8[/tex]

1/3+1/4=1×4/3×4+1×3/4×3=4/12+3/12=7/12

3.

[tex] \frac{7}{12} [/tex]

1,5×10^9=1500000000

4.

[tex]1.5 \times 10 ^{9} [/tex]

(x-2)×(x+2)

x(au carré)+2x-2x-4

x(au carré)-4

5.

[tex]x ^{2} - 4[/tex]

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