Question

aflati toate valorile reale x, pentru care sunt egale valorea expresiei x²-6x si 2-5x

Answer 1

x²-6x=2-5x
x²-6x+5x-2=0
x²-x-2=0
x²-2x+x-2=0
x(x-2)+1(x-2)=0
(x-2)(x+1)=0
x-2=0
x=2
x+1=0
x=-1

x∈{-1;2}