Mathématiques

Question

58 Un
Le
no
55 Who tells the truth?
1. Is the equality y x (y – 2) = 3 x y - 6 true for y = 2?
For y = 3?
2.
LV
This equality
is always true!
1
No!
You're wrong!
Who tells the truth? Explain the answer.
56 Des histoires de norim

Besoin d’aide svp !
58 Un Le no 55 Who tells the truth? 1. Is the equality y x (y – 2) = 3 x y - 6 true for y = 2? For y = 3? 2. LV This equality is always true! 1 No! You're wrong

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1 Réponse

  • Bonjour :)

    Explications étape par étape:

    • y × (y - 2) = 3 × y - 6

    for y = 2

    2 × (2 - 2) = 3 × 2 - 6

    2 × 0 = 6 - 6

    0 = 0

    It's true.

    • y × (y - 2) = 3 × y - 6

    for y = 3

    3 × (3 - 2) = 3 × 3 - 6

    3 × 1 = 9 - 6

    3 = 3

    It's true.

    J'espère t'avoir aidé ;)

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