16Hit1600
Advanced MathEasy–MediumPositive solution of a factored equation

Advanced Math practice question

If (x + 4)(2x − 1) = 0 and x > 0, what is the value of x?

Answer: 1/2 or .5 or 0.5

Either x + 4 = 0 or 2x − 1 = 0. The positive solution is x = 1/2.

Common wrong answers

If you answered 1
1 forgets to divide by 2.
If you answered 2
2 inverts 1/2.
If you answered -4
−4 is the negative solution.

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