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Which of the following conditional statements is false?

A. If x2 = 4, then x = 2.
B. If x = 2, then x2 = 4.
C. If x2 = 4, then x = 2 or x = -2.
D. If x is even, then x2 is even.

User Ed Lucas
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1 Answer

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Final answer:

The false conditional statement is A: If x^2 = 4, then x = 2, because it does not account for x also being -2. The correct version of this is C, which includes both possible values for x.

Step-by-step explanation:

The student is asking to identify which of the following conditional statements is false:

  • A. If x2 = 4, then x = 2.
  • B. If x = 2, then x2 = 4.
  • C. If x2 = 4, then x = 2 or x = -2.
  • D. If x is even, then x2 is even.

The false conditional statement is:

A. If x2 = 4, then x = 2. This statement is false because it does not consider that x could also be -2. A correct version of this statement is represented by option C.

Statement B is true because when x is 2, squaring it will indeed yield 4. Statement C is true as it correctly states both possible values for x when x2 equals 4. Statement D is also true, as the square of any even number results in an even number.

User ChAlexey
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