Determine 80662

Given the function y = x2 - 4x + 3. Determine all real numbers z such that g(x) = g(-2).

Correct answer:

x1 =  6
x2 =  -2

Step-by-step explanation:

g(x) =y = x2  4x + 3 g(x)=g(2)  x24x+3=(2)24 (2)+3  x24x+3=(2)24 (2)+3 x24x12=0  a=1;b=4;c=12 D=b24ac=4241(12)=64 D>0  x1,2=2ab±D=24±64 x1,2=24±8 x1,2=2±4 x1=6 x2=2

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