Respuesta :

apologiabiology
we need to expand it
standard is 0=ax^2+bx+c

so
expand left side
(2x-1)²=(2x-1)(2x-1)=4x²-4x+1
now we gots
-x²+3=4x²-4x+1
add x^2 to both sides and minus 3
0=5x²-4x-2

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