PHDFlopper
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 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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