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

01-10-2018

The answer is 5.

5^2 = 25 25 - 6 = 19

5 x 2 = 10 10 + 9 = 19

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