Question

Urgente ! 2x-3.x-1/2=-1

Answer 1

Resposta:

$(2x-3)*(x-\frac{1}{2})=-1\\(4x-6)*(2x-1)=-2\\8x^{2} -4x-12x+6+2=0\\8x^{2} -16x+8=0 (:8)\\x^{2} -2x+1=0\\delta=2^{2} -4*1*1\\delta=4-4\\delta=0\\x'=\frac{-b+\sqrt{delta}}{2*a}\\\\x'=\frac{-(-2)+0}{2*1}\\\\x'_{e}x"=\frac{2}{2}=1$

Explicação passo-a-passo: