Write Function and Coefficients: Write down the given function and identify the coefficients.The given function is F(x)=3x2−16x+21. The coefficients are a=3, b=−16, and c=21.
Find Zeros: Set the function equal to zero to find the zeros. 0=3x2−16x+21
Factor Quadratic Equation: Factor the quadratic equation, if possible.To factor, we look for two numbers that multiply to a∗c (3∗21=63) and add to b (−16).The numbers that satisfy this are −9 and −7 because −9×−7=63 and −9+−7=−16.
Write Factored Form: Write the factored form of the equation.0=3(x−7)(x−3)
Solve for x: Set each factor equal to zero and solve for x.x−7=0 or x−3=0x=7 or x=3
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