To determine how far the ball has traveled when it hits the ground, Leon can use the Zero Product Property, which states that if the product of two factors equals zero, at least one of the factors must be zero.
In the equation \(0 = -\frac{1}{2}x(x - 20)\), he can set each factor equal to zero:
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The first factor is \(-\frac{1}{2}x\). Setting this equal to zero, we have: \[ -\frac{1}{2}x = 0 \implies x = 0. \]
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The second factor is \(x - 20\). Setting this equal to zero, we have: \[ x - 20 = 0 \implies x = 20. \]
Thus, the solutions to the equation \(0 = -\frac{1}{2}x(x - 20)\) are \(x = 0\) and \(x = 20\).
So, the correct answer is:
2. Solve the two equations: −1/2x=0 and x−20=0.