Mathematics
Grade10
Easy

Question

What is the area of the shaded region?

  1.  x squared – 16
  2.  x squared plus 16
  3. 4x + 24
  4. 8x + 16

The correct answer is: 8x + 16


    Area of shaded region = Area of bigger square – Area of smaller square
    equals left parenthesis x plus 4 right parenthesis squared – x squared
    equals x squared plus 8 x plus 16 – x squared
    space space equals space 8 x space plus space 16 space

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