Question

(5x-20)*(1,2x+3,6)=0

Answer 1

6х^2+18х-24х-72=0
6х^2-6х-72=0
Д=36+1728=1764
х1=(6+42):12=4
х2=(6-42):12=-3

Answer 2

To solve the equation (5x-20)(1.2x+3.6) = 0, we need to find the values of x that make the expression equal to zero. This can be done by setting each factor equal to zero and solving for x.

Setting 5x - 20 = 0: 5x = 20 x = 20/5 x = 4

Setting 1.2x + 3.6 = 0: 1.2x = -3.6 x = -3.6/1.2 x = -3

Therefore, the values of x that satisfy the equation (5x-20)(1.2x+3.6) = 0 are x = 4 and x = -3.