February 2021 0 62 Report
Urgent :) Dire si les égalités suivantes sont justes. Justifier
a) 5x² = (5x)²
b) 36x² = (6x)²
c) 4x² = (-2x)²
d) (3x)² = 6x²
e) (-x)² = 6x²
f) -9x² = (-3x)²
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