Mathematics
Grade10
Easy

Question

Determine the solutions of the quadratic equationstraight x squared plus straight x minus 2 equals 0 by factoring.

  1. straight x equals 1 comma space straight x equals negative 2
  2. straight x equals negative 1 comma space straight x equals negative 2
  3. straight x equals negative 1 comma space straight x equals 2
  4. straight x equals 1 comma space straight x equals 2

The correct answer is: straight x equals 1 comma space straight x equals negative 2


    straight x squared plus straight x minus 2 equals 0
straight x squared plus 2 straight x minus straight x minus 2 equals 0
straight x open parentheses straight x plus 2 close parentheses minus 1 open parentheses straight x plus 2 close parentheses equals 0
open parentheses straight x minus 1 close parentheses open parentheses straight x plus 2 close parentheses equals 0
straight x minus 1 equals 0 comma space straight x plus 2 equals 0
straight x equals 1 comma space straight x equals negative 2

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