x²+3x+1=(x-2)²
QUADRATIC equation
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x2+3x+1=x2-4x+4
3x+1=4-4x
3x+4x=4-1
7x=3
x=3/7
3x+1=4-4x
3x+4x=4-1
7x=3
x=3/7
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