Answer:
x = ± 4
Step-by-step explanation:
given 3x² = 48 ( divide both sides by 3 )
x² = 16 ( take the square root of both sides )
x = ± = ± 4
x ∈ {- 4, 4 }
Mercury:3.3022×10^23 earth:5.9722×10^24 venus:4.8685×10^24 mars:6.4185×10^23
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