panda3101 panda3101
  • 01-10-2018
  • Mathematics
contestada

Squaring a number and subtracting 6 gives the same result as doubling the number and adding 9.

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datgamer13
datgamer13 datgamer13
  • 01-10-2018

The answer is 5.

5^2 = 25        25 - 6 = 19

5 x 2 = 10       10 + 9 = 19

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