Question

найдите корни уравнения
1) х^2 -7x = 0
2) 5x^2 + 2x =0

Answer 1

1) х^2 -7x = 0
x(x-7)=0
x=0
x=7
2) 5x^2 + 2x =0
x(5x+2)=0
x=0
x=-5/2