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Réponse :

Explications étape par étape

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a | 2a | a^2 | 2a^2 | (2a)^2

2 |...... | ...... | ...........| ..........

-3|...... | ...... | .......... | ..........

....| 4/3|....... | .......... | .........

2a = 2 x 2 = 4

a^2 = 2^2 = 4

2a^2 = 2 x 4 = 8

(2a)^2 = 4^2 = 16

2a = 2 x (-3) = (-6)

a^2 = (-3)^2 = 9

2a^2 = 2 x 9 = 18

(2a)^2 = (-6)^2 = 36

2a = 4/3

a = 4/(3 x 2) = 2/3

a^2 = (2/3)^2 = 4/9

2a^2 = 2 x 4/9 = 8/9

(2a)^2 = (4/3)^2 = 16/9

a .....| 2a | a^2 | 2a^2 | (2a)^2

2 ....|.4 ... | ..4 | ......8 ...| ..16.....

-3....|..-6. | .9.. | ......18.. | ...36..

2/3.| 4/3..|4/9. | .8/9.. | ..16/9.