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Coordinate Geometry
Question
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The expanded form of (x + 2y + z)2 is

  • x2 + 4y2 + z2 + 4xy + 4yz + 2zx

     

  •  x2 + 4y2 + z2 + 2xy + 2yz + zx
  • x2 + 4y2 + z2 + 4xy + 2yz + 4zx
  • x2 + 4y2 + z2 + 4xy + 4yz + 4zx

Answer

A.

x2 + 4y2 + z2 + 4xy + 4yz + 2zx

 

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Some More Questions From Coordinate Geometry Chapter

Find the value of n, given (81)5/n = 243.

Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer.

4x2 - 3x + 7