Maths-
SAT
Easy

Question

5(x - 3)(x + 1) = 0
What positive value of x satisfies the equation above?

The correct answer is: 3


    5(x-3) (x+1) = 0

    rightwards double arrow  (x-3) (x+1) = 0

    rightwards double arrow  x – 3 = 0  or  x + 1 = 0

           x = 3        or  x = -1
    Among the two the positive value is x = 3.

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