Question

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Answer 1

1.
$2x^2-12x-1=2(1-2x) \ 2x^2-8x-3=0 \ D=64-4*2*(-3)= 88 \ x1= frac{8- sqrt{88} }{4} \ x2= frac{8+ sqrt{88} }{4}$
2.
$frac{x^2-y^2}{2xy}* frac{2y}{x-y} = frac{x^2-2y^3}{2x^2y-2xy^2}$