Which of the following is a root of the equation $2x^{2}-5x-3=0$?
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Which of the following is a root of the equation $2x^{2}-5x-3=0$?
Substitute x=3 into the equation: 2(3)^2 - 5(3) - 3 = 2(9) - 15 - 3 = 18 - 18 = 0. Thus, x=3 is a root.
Substitute x equals 3 into the equation 2x squared minus 5x minus 3 to get 2 times 9 minus 15 minus 3. This simplifies to 18 minus 18, which equals 0. Therefore, x equals 3 is a root of the equation.