Question

знайти корени уравнения x2-7x+6=0​

Answer 1

$\displaystyle x^2-7x+6=0\\x^2-x-6x+6=0\\x(x-1)-6(x-1)=0\\(x-1)(x-6)=0\\x-1=0,x-6=0\\x_1=1,x_2=6$