Q. Find the zeros of the function f(x)=2x2−19x+42. Round values to the nearest hundredth (if necessary).Answer: x=
Use Quadratic Formula: To find the zeros of the function f(x)=2x2−19x+42, we need to solve the quadratic equation2x2−19x+42=0. We can use the quadratic formula, which is x=2a−b±b2−4ac, where a, b, and c are the coefficients of the quadratic equation ax2+bx+c=0.
Identify Coefficients: In our equation, a=2, b=−19, and c=42. Plugging these values into the quadratic formula, we get:x=2⋅2−(−19)±(−19)2−4⋅2⋅42x=419±361−336x=419±25
Apply Quadratic Formula: Simplify the square root and the expression:x=419±5This gives us two solutions:x=4(19+5) and x=4(19−5)x=424 and x=414
Simplify Expression: Divide to find the zeros:x=424=6 and x=414=3.5
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