Q. Find the zeros of the function f(x)=2x2−22x+56. Round values to the nearest hundredth (if necessary).Answer: x=
Set Quadratic Function Equal: Set the quadratic function equal to zero to find its zeros.f(x)=2x2−22x+56=0
Factor Quadratic Equation: Factor the quadratic equation, if possible, to find the values of x that make the function equal to zero.The quadratic factors as (2x−8)(x−7)=0
Solve for x: Set each factor equal to zero and solve for x.2x−8=0 or x−7=0
Solve 2x−8=0: Solve the first equation 2x−8=0 for x.2x=8x=28x=4
Solve x−7=0: Solve the second equation x−7=0 for x.x=7
Check Solutions: Check the solutions by substituting them back into the original equation to ensure they make the equation true.For x=4: f(4)=2(4)2−22(4)+56=32−88+56=0For x=7: f(7)=2(7)2−22(7)+56=98−154+56=0Both solutions make the equation true.
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