PHDFlopper PHDFlopper

17-03-2018
Mathematics

contestada

√0.64x² if x≤0
its a simplification problem and the root covers the entire expression

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sqdancefan sqdancefan

17-03-2018

The square root symbol (√) signifies the principal square root, that is, the positive one. So √(x^2) = |x|

For x ≤ 0, √(0.64x^2) = -0.8x

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