Quadratic 21643

Solve the quadratic equation:

2y2-8y + 12 = 0

Correct answer:

y1 = 2+1.4142135623731i
y2 = 2-1.4142135623731i

Step-by-step explanation:

2y28y+12=0  2y28y+12=0 2 ...  prime number 8=23 12=223 GCD(2,8,12)=2  y24y+6=0  a=1;b=4;c=6 D=b24ac=42416=8 D<0  y1,2=2ab±D=24±8=24±22 y1,2=24±2i2 y1,2=2±1.414214i y1=2+1.4142135623731i y2=21.4142135623731i  y1=2+1.4142135623731i

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