3(x-4)²-4(x+1)(x-2)=6-x²
3(x2-8x+16)-4(x2-2x+x-2)= 6-x²
3x2-24x+48-4x2+4x+8=6-x²
-X2-20x+56=6-x²
-20x=-50
X=2,5
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3(x-4)²-4(x+1)(x-2)=6-x²
3(x2-8x+16)-4(x2-2x+x-2)= 6-x²
3x2-24x+48-4x2+4x+8=6-x²
-X2-20x+56=6-x²
-20x=-50
X=2,5