emmettweakly emmettweakly
  • 18-12-2019
  • Mathematics
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creamcheesebun
creamcheesebun creamcheesebun
  • 20-12-2019

10^2x²-3=10^9-x²

by comparison,

2x²-3=9-x²

3x²=12

x²=4

x= 2 or -2

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