Mathematics
Grade10
Easy

Question

Factor 2x2 + 10xy + 12y2.

  1. (x + 6y)(2x + 10)
  2. 2(x + 8y)(x + 4y)
  3. 2(x + 2y)(x + 3y)
  4. (2x + 6y)(x + 5y)

The correct answer is: 2(x + 2y)(x + 3y)


    Take out 2.
    2(x2 + 5xy + 6y2)
    = 2(x2 + 3xy + 2xy + 6y2) = 2(x(x + 3y) + 2y(x + 3y)) = 2(x + 2y)(x + 3y)

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