Question

Resuelve: (x - 5)(x - 1) = 12​

Answer 1

Respuesta:

Explicación paso a paso:

x²-x-5x+5=12

x²-6x+5=12

x²-6x+5-12=0

x²+x-7x+5-12=0

x²+x-7x-7=0

x(x+1)-7x-7=0

x(x+1)-7(x+1)=0

(x+1)(x-7)=0

x+1=0

x-7=0

x=-1

x-7=0

x=-1

x=-7

x₁=-1;  x₂=7