how does this give 7? -(3^2-414)

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how does this give 7? -(3^2-4*1*4)

Guest Feb 28, 2016

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-(3^2- 4*1*4) =

- [ 9 - (4 * 1 * 4 ) ] =

- [ 9 - (16) ]=

- [ -7] =

7

CPhill Feb 28, 2016

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