Question

А) x(x-11)=0 б) (x-6)(x+12)=0 в) (x-0,7)(0,2x+0,48)=0

Answer 1

А)
x(x-11)=0
x = 0 или x - 11 = 0
                x = 11
ответ: 0 ; 11

б)
(x-6)(x+12)=0
x-6=0  или  x+12=0
x=6     или  x = -12
ответ: -12 ; 6


в)
(x-0,7)(0,2x+0,48)=0
x-0,7=0  или  0,2x+0,48=0
x=0,7              0,2x=-0,48
                        x=-0,48:0,2
                        x= -2,4

ответ: -2,4 ; 0,7

Answer 2

To find the solutions for each equation, we need to set each expression inside the parentheses equal to zero and solve for the variable x. Here are the solutions for each equation:

а) x(x - 11) = 0

To find the solutions, set each factor equal to zero:

1. x = 0
2. x - 11 = 0 x = 11

So the solutions are x = 0 and x = 11.

б) (x - 6)(x + 12) = 0

To find the solutions, set each factor equal to zero:

1. x - 6 = 0 x = 6
2. x + 12 = 0 x = -12

So the solutions are x = 6 and x = -12.

в) (x - 0.7)(0.2x + 0.48) = 0

To find the solutions, set each factor equal to zero:

1. x - 0.7 = 0 x = 0.7
2. 0.2x + 0.48 = 0 0.2x = -0.48 x = -0.48 / 0.2 x = -2.4

So the solutions are x = 0.7 and x = -2.4.