Question

найдите корни уравнения 4x2-20x=0

Answer 1

4x2-20x=0

x (4x - 20) = 0

x1 = 0 i   4x - 20 = 0

                4x = 20

                 x = 5

 

OTVET: x=0  i  x=5

Answer 2

4x^2-20x=0 | :4
X^2-5x=0
X(x-5)=0
X1=0 X2=5