Question
One of the roots of the quadratic equation 3x² + 4x –
k = 0 is 1. What is the value of k?Solution
One of the roots of the quadratic equation 3x² + 4x – k = 0 is 1. Therefore, put x = 1 3(1)² + 4 × 1 – k = 0 k = 7
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