√u^2 =u for any number u. True or False?

i think it's true...

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- September 20th 2011, 06:07 AMnaturebuilder√u^2 =u for any number u. True or False?
√u^2 =u for any number u. True or False?

i think it's true... - September 20th 2011, 06:14 AMPlatoRe: √u^2 =u for any number u. True or False?
- September 20th 2011, 11:19 AMpsolakiRe: √u^2 =u for any number u. True or False?